List of words with the suffix -ology#P

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The suffix -ology is commonly used in the English language to denote a field of study. The ology ending is a combination of the letter o plus logy in which the letter o is used as an interconsonantal letter which, for phonological reasons, precedes the morpheme suffix logy.{{cite web |last1=Harper |first1=Douglas |title=-ology |url=http://www.etymonline.com/index.php?term=-ology&allowed_in_frame=0 |website=Online Etymology Dictionary |access-date=7 May 2016}} Logy is a suffix in the English language, used with words originally adapted from Ancient Greek ending in {{lang|grc|-λογία}} (-logia).{{Cite web |title=Greek Dictionary Headword Search Results |url=https://www.perseus.tufts.edu/hopper/resolveform?type=end&lookup=logia&lang=greek |archive-url=https://web.archive.org/web/20121015070627/https://www.perseus.tufts.edu/hopper/resolveform?type=end&lookup=logia&lang=greek |archive-date=2012-10-15 |access-date=2025-06-11 |website=Perceus |publisher=Tufts University}}

English names for fields of study are usually created by taking a root (the subject of the study) and appending the suffix logy to it with the interconsonantal o placed in between (with an exception explained below). For example, the word dermatology comes from the root dermato plus logy.{{cite web |title=dermatology |url=http://www.etymonline.com/index.php?term=dermatology |access-date=23 July 2016 |website=Etymoline Online Etymology Dictionary}} Sometimes, an excrescence, the addition of a consonant, must be added to avoid poor construction of words.

There are additional uses for the suffix, such as to describe a subject rather than the study of it (e.g., duology). The suffix is often humorously appended to other English words to create nonce words. For example, stupidology would refer to the study of stupidity; beerology would refer to the study of beer.

Not all scientific studies are suffixed with ology. When the root word ends with the letter "L" or a vowel, exceptions occur. For example, the study of mammals would take the root word mammal and append ology to it, resulting in mammalology, but because of its final letter being an "L", it instead creates mammalogy. There are also exceptions to this exception. For example, the word angelology with the root word angel, ends in an "L" but is not spelled angelogy according to the "L" rule.Eric Partridge, Origins, 2nd ed., New York, Macmillan, 1959{{Cite web |title=Words Ending In ogy |url=https://words-ending-in-ogy.wordover.com/e/ |access-date=2025-06-11 |website=WordOver Crossword Solver}}

The terminal -logy is used to denote a discipline. These terms often utilize the suffix -logist or -ologist to describe one who studies the topic. In this case, the suffix ology would be replaced with ologist. For example, one who studies biology is called a biologist.

This list of words contains all words that end in ology.{{Cite web |last=Helmenstine |first=Anne Marie |date=June 10, 2025 |title=A Roster of Scientific Disciplines From A to Z |url=https://www.thoughtco.com/ology-list-of-sciences-608325 |access-date=2025-06-11 |website=ThoughtCo |language=en}}{{cite web |title=List all words that contain ology |url=http://www.morewords.com/contains/ology/ |url-status=dead |archive-url=https://web.archive.org/web/20170426025404/https://www.morewords.com/contains/ology/ |archive-date=April 26, 2017 |access-date=23 July 2016 |website=More Words}}{{cite book |last1=Aldrich |first1=Chris |url=https://books.google.com/books?id=A7iDw172KBcC&q=define+crenology&pg=PA98 |title=The Aldrich dictionary of phobias & other word families |date=2002 |publisher=Trafford |isbn=1-55369-886-X |location=Victoria, B.C. |pages=88–139 |access-date=12 June 2017}}{{cite web |title=A list of Ologies |url=http://learningabe.info/Ologieslist.html |url-status=dead |archive-url=https://web.archive.org/web/20141006160307/http://learningabe.info/Ologieslist.html |archive-date=October 6, 2014 |access-date=12 June 2017 |website=Project Arrow}}{{cite web |date=2013 |title=Sciences and Studies |url=http://phrontistery.enacademic.com/4223/Sciences_and_Studies |url-status=dead |archive-url=https://phrontistery.enacademic.com/4223/Sciences_and_Studies |archive-date=September 29, 2020 |access-date=12 June 2017 |website=Phrontistery Dictionary. |language=en |via=Academic}}{{cite web |title=Ologies and Graphys |url=http://www.quick-facts.co.uk/science/ologies.html |url-status=dead |archive-url=https://web.archive.org/web/20230404170038/http://www.quick-facts.co.uk/science/ologies.html |archive-date=April 4, 2023 |access-date=18 July 2017 |website=Quick Facts}}{{Cite web |date=2020-05-06 |title=10 Types Of "Ologists" You Ought To Know Right Now |url=https://www.dictionary.com/e/s/different-types-of-ologists/ |access-date=2025-06-11 |website=Dictionary.com |language=en-US}} It addition to words that denote a field of study, it also includes words that do not denote a field of study for clarity, indicated in orange.

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A

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-ology Word

! Description

! Synonyms

----Alternative spellings

abiologyAbiology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of inanimate, inorganic, or lifeless things.
abiophysiology"[https://medical-dictionary.thefreedictionary.com/abiophysiology abiophysiology]." Segen's Medical Dictionary. Farlex, 2011. via The Free Dictionary by Farlex, Inc.. Assessed September 24, 2024.The study of inorganic processes in biological systems.
acanthochronologyThe study of cactus spines or euphorbia thorns grown in time ordered sequence.
acanthologyAcanthology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The study of spined things, in particular sea urchins, and the resultant impact on taxonomy.
acarologyThe study of mites and ticks.
| accentologyThe systematic analysis of word or phrase stress and accentuation in language.
aceologyThe science of remedies or therapeutics.*iamatology
acologyThe science of medical remedies, Materia Medica.
acridologyThe study of grasshoppers and locusts (infraorder Acrididea).
acropathologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/737411/all/acropathology Acropathology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. via Taber's Online. Accessed September 24, 2024.The study of diseases affecting limbs.
actinobiologyThe study of the effects of radiation upon living organisms.
actinologyThe study of the effect of light on chemicals.
style="background: #ffdead"|acyrology{{Efn|Term is not about a field of study.|name=Field of Study}}The incorrect use of language.*cacology
adenologyThe branch of medicine dealing with the development, structure, function, and diseases of glands.
aedoeology{{Cite book |last=Elliot |first=Sydney Barrington |url=http://archive.org/details/aedoeologytreati00elli |title=Aedoeology: a treatise on generative life; including pre-natal influence, limitation of offspring, and hygiene of the generative system |date=1893 |location=Boston |publisher=Arena Publishing Co.}}{{Cite web |last=Chrisomalis |first=Stephen |title=List of unusual words beginning with A |url=https://phrontistery.info/a.html |access-date=2025-06-10 |website=The Phrontistery - A Dictionary of Obscure Words}}The study of generative organs and processes
aerobiologyA branch of biology that studies organic particles, such as bacteria, fungal spores, very small insects, pollen grains and viruses, which are passively transported by the air.
aerolithologyThe study of meteorites.
aerogeologyAerogeology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The study of geological features by aerial observation and aerophotography.
aerology#The branch of meteorology involving the observation of the atmosphere by means of balloons, airplanes, etc.

  1. The study of the air and of the atmosphere; used in the US Navy until early 1957.
*meteorology
aeropalynologyBiesboer, David. “Aeropalynology.” The American Biology Teacher 39, no. 2 (1977): 88–92.The study of pollen grains and spores (palynomorphs) in the atmosphere.
aetiology#The establishment of a cause, origin, or reason for something.
  • The study of causes or causation.
  • The study or investigation of the causes of disease; a scientific explanation for the origin of a disease.
  • 3.
    • etiology
    • ætiology
    agathologyThe science or theory of the good or goodness.
    agmatology"[https://www.thefreedictionary.com/agmatology agmatology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The branch of medical science that studies fractures.
    agnoiologyThe study of things of which humans are by nature ignorant, or of things which cannot be known.*agniology
  • agnoeology
  • agnotologyThe study of culturally induced ignorance or doubt, particularly the publication of inaccurate or misleading scientific data.*agnatology
    agriologyThe comparative study of primitive, illiterate, or "savage" cultures.
    agrobiologyThe science of plant nutrition and growth concerning soil conditions, especially to determine ways to increase crop yields.
    agroclimatologyAgroclimatology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The study of meteorological, climatological, and hydrological conditions that are significant for agriculture owing to their interaction with the objects and processes of agricultural production.
    agroecologyThe study of ecological processes that operate in agricultural production systems.
    agrogeologyThe study of the origins of minerals known as agrominerals and their applications.
    agrology#The science and art of agriculture.
    1. A sub-discipline of soil science which addresses optimizing crop production (common usage, not acceptable to soil scientists)
    2. A sub-discipline of agronomy which addresses the influence of edaphic conditions on crop production.
    agrometeorologyThe study of weather and the use of weather and climate information to enhance or expand agricultural crops and/or to increase crop production.
    agrostologyThe scientific study of the grasses (family Poaceae).*graminology
    agrotechnologyThe application of modern technology to agriculture.
    aitiology#The study of causation, or origination.
  • The causes of diseases or pathologies. (medicine)
  • *etiology
    • aetiology
    • ætiology
    AlbanologyAn interdisciplinary branch of the humanities that addresses the language, costume, literature, art, culture, and history of Albanians.
    alethiologyThe study of the nature of truth or aletheia.*alethology
    algology#The medical treatment of pain as practiced in Greece and Turkey.
    1. The branch of botany dealing with algae.
    2. phycology
    alimentology"[https://www.thefreedictionary.com/alimentology alimentology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of nutrition.
    allergologyThe study of the causes and treatment of allergies.
    alphabetologyAlphabetology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The study of alphabetic systems of writing.
    amphibiologyAmphibiology.” Dictionary. Merriam-Webster. Merriam-Webster.com.Accessed September 24, 2024.The branch of zoology that deals with the class Amphibia.
    style="background: #ffdead"|amphibology{{Efn|name=Field of Study}}A situation where a sentence may be interpreted in more than one way due to ambiguous sentence structure.*amphiboly
    anaplastologyThe branch of medicine dealing with the prosthetic rehabilitation of an absent, disfigured, or malformed anatomically critical location of the face or body.
    anatripsologyAnatripsology, N.” Oxford English Dictionary, Oxford University Press, July 2023.The study of friction as a remedy in medicine.
    andrologyThe medical specialty that deals with male health, particularly relating to the problems of the male reproductive system and urological problems that are unique to men.
    anemologyThe study of wind.
    anesthesiologyThe branch of medical science that studies and applies anesthetics and anesthesia.
    angelologyThe study of angels.
    angiologyThe study of the anatomy of blood and lymph vascular systems.
    angiopathologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/747169/all/angiopathology#:~:text=%5Bangio%2D%20%2B%20pathology%5D,diseases%20of%20the%20blood%20vessels. Angiopathology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Taber's Online.The pathology of diseased blood vessels.
    style="background: #ffdead"|antapology"[https://www.thefreedictionary.com/antapology antapology]." Farlex Trivia Dictionary. Farlex, Inc., 2011. via The Free Dictionary by Farlex. Accessed September 24, 2024{{Efn|name=Field of Study}}The reply to an apology.
    anthoecologyAnthoecology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The branch of ecology that studies the relationship of flowers to their environment.
    style="background: #ffdead"|anthology{{Efn|name=Field of Study}}A published collection of poems or other pieces of writing.
    anthropobiologyThe study of the biological relationships of humans as a species.*bioanthropology
    anthropologyThe holistic scientific and social study of humanity, mainly using ethnography as its method.
    style="background: #ffdead"|anthropomorphologyAnthropomorphology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed 24 Sep. 2024.{{FULLPAGENAME}}#ZThe attribution of human characteristics to God.
    anthroposociologyThe anthropological and sociological study of race to establish certain people's superiority.
    anthrozoologyThe study of the interactions between humans and animals.
    style="background: #ffdead"|antitechnology{{Efn|name=Field of Study}}A philosophy opposing technology.
    aphasiologyThe study of linguistic problems or aphasias resulting from brain damage.
    aphnology"[https://www.thefreedictionary.com/aphnology aphnology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of wealth.*plutology
    apicologyThe study of honey bee ecology.
    apiologyThe scientific study of honey bees and honey-making.*apidology
    style="background: #ffdead"|apology{{FULLPAGENAME}}#ZAn acknowledgement for a failure or mistake.
    arachnologyThe scientific study of spiders and related animals such as scorpions, pseudoscorpions, and harvestmen, collectively called arachnids.
    araneologyThe branch of arachnology that deals with spiders.
    archaeogeology"Archaeogeology, N.“ Oxford English Dictionary, Oxford UP, September 2024.{{efn|name=fn3}}The branch of geology that studies the geological formations of the past.
    archeology{{efn|name=fn3}}The study of human activity through the recovery and analysis of material culture.
    archeozoology{{efn|name=fn3}}The study of faunal remains or the items left behind when an animal dies.*zooarcheology{{efn|name=fn3}}
    archologyThe study of the science of governance or the origin of things.
    arcology

    |The field of creating architectural design principles for very densely populated, ecologically low-impact human habitats.

    |

    areologyThe study of the planet Mars' geology.
    aretology#The part of moral philosophy which treats virtue, its nature, and the means of attaining it.

    1. A narrative about a divine figure's miraculous deeds.
    aristologyThe art or study of cooking and dining.
    arkeologyThe study of the story of Noah's Ark, particularly the search for physical evidence which would corroborate it.
    ArmenologyThe study of Armenian history, language, and culture.
    arteriologyArteriology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The branch of angiology dealing with arteries.
    arthrologyThe branch of anatomy dealing with joints.*synosteology
    arthropathologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/764972/all/arthropathology Arthropathology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Taber's Online. Accessed September 24, 2024.The study of functional and structural changes made by diseases of the joints.
    arthropodologyThe study of arthropods.
    AssyriologyThe study of the Assyrians.
    astacologyThe study of crayfish.
    asteroseismologyThe study of oscillations in stars.
    astheniologyThe study of diseases of weakening and aging.
    asthmology{{Cite book |url=https://link.springer.com/book/10.1007/978-3-642-70316-4 |title=Highlights in Asthmology |publisher=Springer Berlin, Heidelberg |year=2012 |isbn=978-3-642-70316-4 |editor-last=Michel |editor-first=François Bernard |language=en |doi=10.1007/978-3-642-70316-4 |editor-last2=Bousquet |editor-first2=Jean |editor-last3=Godard |editor-first3=Philippe |via=SpringerLink}}Neologism for the study of asthma, proposed in 1981.
    astroarchaeology{{efn|name=fn3}}The study of astronomical knowledge of prehistoric cultures.* archaeoastronomy
    astrobiologyThe study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth.*exobiology
    astrogeologyThe science dealing with the structure and composition of planets and other bodies in the Solar System.*exogeology
    astrolithologyThe study of aerolites.
    astrologyThe study of the movements and relative positions of celestial objects as a means for divining information about human affairs and terrestrial events.
    astrometeorologyThe study of the theoretical effects of astronomical bodies and forces on the Earth's atmosphere.
    astroseismologyThe study of oscillations in stars.*asteroseismology
    style="background: #ffdead"|atheology{{Efn|name=Field of Study}}The resistance or opposition to theology or the study of religion
    atmology{{Cite web |title=Definition of 'atmology' |url=https://www.collinsdictionary.com/us/dictionary/english/atmology |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}The branch of science dealing with the laws and phenomena of aqueous vapour.
    atmospherologyAtmospherology, N.Oxford English Dictionary, Oxford UP, July 2023.The study of a planetary atmosphere.
    atomology"[https://www.thefreedictionary.com/atomology atomology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study or doctrine of atoms.
    audiologyThe study of the auditory and vestibular systems, and associated disorders.
    autecologyOne of two broad subdivisions of ecology, which studies the individual organism or species.
    autologyThe study of oneself.
    autonumerology"[https://www.thefreedictionary.com/autonumerology autonumerology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of unusual license plates.
    auxanologyThe study of growth.*auxology
    auxologyThe study of growth.*auxanology
    axiologyThe philosophical study of value.
    azoology[https://www.thefreedictionary.com/azoology "azoology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of inanimate nature.

    B

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    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    bacteriologyThe scientific study of bacteria, especially in relation to disease and agriculture.
    balneologyThe study of the treatment of disease by bathing, usually practiced at spas.
    barologyBarology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of gravity and weight and their relation.
    BascologyBascology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of Basque language and culture.
    batologyThe study of plants in the genus Rubus, commonly known as brambles.
    batrachologyThe study of amphibians.
    style="background: #ffdead"|battology{{Cite web |title=Definition of 'battology' |url=https://www.collinsdictionary.com/us/dictionary/english/battology#:~:text=battology%20in%20American%20English,words%20in%20speaking%20or%20writing |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}{{Efn|name=Field of Study}}Continual unnecessary reiteration of the same words, phrases, or ideas.
    berestologyDekker, Simeon (2018). "The Field of Study: Berestology". Old Russian birchbark letter: a pragmatic approach. Leiden. p. 1. {{ISBN|978-90-04-35320-6}}. OCLC 1030304572.

    |The study of birchbark manuscripts.

    |

    bibliologyThe study of books as physical, cultural objects.
    bioarchaeology

    |The study of ancient bones.

    |

    biocenologyBiocenology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The branch of biology deals with studying biological communities and their members' interactions.*biocoenology
    bioclimatologyThe interdisciplinary field of science that studies the interactions between the biosphere and the Earth's atmosphere on time scales of the order of seasons or longer (in opposition to biometeorology).
    bioecologyThe study of the relationship of organisms to each other and their environment.
    biogerontologyThe sub-field of gerontology concerned with the biological aging process, its evolutionary origins, and potential means to intervene in the process.
    biologyThe study of life and living organisms and their morphology, anatomy, and physiology.
    biometeorologyThe study of the relationship between atmospheric conditions (the weather) and living organisms.
    biopsychologyThe application of the principles of biology to study physiological, genetic, and developmental mechanisms of behavior in humans and other animals.*psychobiology

    • biological psychology
    • behavioral neuroscience
    biospeleologyThe branch of biology dedicated to the study of organisms that live in caves and are collectively referred to as troglofauna.*cave biology
    style="background: #ffdead"|biotechnology{{Efn|name=Field of Study}}The use of living systems and organisms to develop or make products.
    boxologyA representation of an organized structure as a graph of labeled nodes ("boxes") and connections between them (as lines or arrows).
    style="background: #ffdead"|brachyology{{Efn|name=Field of Study}}#The colloquial omission of words from a phrase; e.g. "morning" instead of "good morning".
    1. Concise speech or laconism.
    1. brachylogy
    bracketologyThe practice of predicting and analyzing sports tournament brackets.
    bromatologyThe study of food.
    brontologyThe study of thunder.
    bryologyThe branch of botany concerned with the scientific study of bryophytes.
    bumpologyArchaic and derogatory term for phrenology.
    ByzantinologyThe interdisciplinary branch of the humanities that addresses the history, culture, costumes, religion, art, such as literature and music, science, economy, and politics of the Byzantine Empire.

    C

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    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    style="background: #ffdead"|cacologyCacology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.{{Efn|name=Field of Study}}Poor diction or word choice.*acyrology
    caliologyThe study of birds nests.*nidology
    campanologyThe study of bells: their casting, tuning, and ringing.
    cancerology“[https://www.merriam-webster.com/medical/cancerology Cancerology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of cancer.
    carcinologyThe study of crustaceans.*malacostracology

    • crustalogy
    • crustaceology
    cardiologyThe study of the heart.
    caricologyThe study of carex or sedges.
    cariologyThe study of dental caries and cariogenesis.
    carphologyA lint-picking behavior that is often a symptom of a delirious state.
    carpologyThe study of the structure of seeds and fruit.
    cartologyThe creation of charts and maps based on the layout of a territory's geography.
    catachronobiology"[https://medical-dictionary.thefreedictionary.com/catachronobiology catachronobiology]." Medical Dictionary for the Health Professions and Nursing. Farlex, 2012. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of the deleterious effects of time on a living system.
    cecidologyThe study of plant galls, also known as cecidia, which are growths on plants produced by insects, mites, or fungi.*cecidiology
    cephalologyCephalology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The science of the head.
    cereologyThe study of, or practice of creating crop circles.
    cerebrologyCerebrology, N.” Oxford English Dictionary. Oxford University Press, June 2024.The science that deals with the cerebrum or brain.
    cetologyThe branch of zoology concerned with the order Cetacea, which includes whales, dolphins, and porpoises.
    chaologyThe study of chaos and chaotic systems.*chaos theory
    characterologyThe study of character reading that attempts to combine revised physiognomy, reconstructed phrenology and amplified pathognomy, with ethnology, sociology and anthropology.
    cheloniologyThe study of turtles or tortoises (order Chelonia).*chelonology
  • testudinology
  • chemo-immunologySordo-Bahamonde, C.; Lorenzo-Herrero S., Gonzalez-Rodriguez, A. P. et al. Chemo-Immunotherapy: A New Trend in Cancer Treatment. Cancers (Basel). vol. 15, no. 11: 2012. Published May 25, 2023. {{doi|10.3390/cancers15112912|doi-access=free}}The branch of chemistry that studies the chemical processes in immunology.
    chirology#The study of the hand.
    1. Palm reading.
    chondrology“[https://www.merriam-webster.com/medical/chondrology Chondrology].” Medical Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of cartilage.
    choreologyThe study of the aesthetic and science of forms of human movement by special notation; Benesh Movement Notation
    chorology#The study of the causal relations between geographical phenomena occurring within a particular region
  • The study of the spatial distribution of organisms.
  • chresmologyThe study of prophecies.*chrismology
    ChristologyThe field of study within Christian theology which is primarily concerned with the nature and person of Jesus as recorded in the canonical Gospels and the epistles of the New Testament.
    chromatologyChromatology, N.” Oxford English Dictionary. Oxford University Press, June 2024.The study of colour.
    chronobiologyA field of biology that examines periodic (cyclic) phenomena in living organisms and their adaptation to solar- and lunar-related rhythms.
    chronology#The study of things in order of time or the study of time.
  • The arrangement of events or dates in the order of their occurrence.
  • chronooncology[https://medical-dictionary.thefreedictionary.com/chronooncology chronooncology]. Medical Dictionary for the Health Professions and Nursing. (2012). via The Free Dictionary by Farlex. Retrieved September 27, 2024.#The study of the influence of biological rhythms on neoplastic growths.
  • The study of the timing of drug administration for anti-cancer treatments.
  • chronopharmacologyThe study of the effects of biological rhythms on pharmacotherapy and drug administration.
    chrysologyChrysology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study of the production of wealth.
    cirripedologyThe study of barnacles.
    climatologyThe science that deals with climates, and investigates their phenomena and causes.
    clinology"[https://medical-dictionary.thefreedictionary.com/clinology clinology]." Segen's Medical Dictionary. Farlex, Inc., 2011. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of retrogression and decline in form and function in an animal or organism.
    coalitionology{{Cite web |last=Ryan |first=Nicky |date=2016-01-16 |title='Coalitionology' is the new buzzword in Irish politics right now |url=https://www.thejournal.ie/fianna-fail-ard-fheis-coalition-2551860-Jan2016/ |access-date=2024-09-13 |website=The Journal |language=en}}Speculation in the run-up to a general election about possible coalition governments that might ensue. Used in Britain and Ireland.
    coccidologyThe study of scale insects, mealybugs, and organisms within the superfamily Coccoidea.
    codicologyThe study of books as physical objects, especially manuscripts written on parchment (or paper) in codex form.
    codologyCodology, N.” Oxford English Dictionary. Oxford University Press, December 2023.(Irish) Hoaxing, humbugging, bluffing, leg-pulling.*kidology
    cognitologyThe multidisciplinary study of mind and behavior; cognitive science
    cohomology

    |The theory of a sequence of abelian groups associated to a topological space, often defined from a cochain complex.

    |

    coleopterologyThe scientific study of beetles (order Coleoptera).
    collapsologyA neologism used to designate the transdisciplinary study of the risks of the collapse of industrial civilization.
    coloproctologyBranch of medicine dealing with pathology of the colon, rectum, and anus and colorectal surgery.
    cometology{{Cite web |title=Definition of 'cometology' |url=https://www.collinsdictionary.com/us/dictionary/english/cometology |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}The branch of astronomy that deals with comets.
    comitologyIn the European Union, the system of committees, composed of representatives of the member states, is used to oversee the European Commission implementing acts made under European Union legislation.
    computerologyThe study of computers, or any kind of work with computers.
    conchology#The study of molluscs and their shells.

    1. The hobby of shell collecting.
    coniologyThe study of atmospheric dust and its effects on organisms.
    conscientiology{{Cite web |title=Get to know Conscientiology |url=https://campusceaec.org/en/get-to-know-conscientiology-online/ |access-date=2025-06-10 |website=Campus CEAEC |language=en-US}}The study of consciousness.
    contrologyThe methods of the physical fitness system called Pilates.
    coprologyThe study of feces.*scatology
    cosmecologyCosmecology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The science that considers the Earth in its relation to cosmic phenomena.
    cosmetologyThe science or study of cosmetics or being a beautician.
    cosmochronologyThe science of determining timescales for astrophysical objects and events.
    cosmologyThe study of the origin, evolution, and eventual fate of the universe.
    craniologyA pseudomedicine primarily focused on measurements of the human skull, based on the concept that the brain is the organ of the mind and the mental state can be determined by physical external characteristics.*phrenology
    crenologyCervini, C, and A M Zampa. “[https://pubmed.ncbi.nlm.nih.gov/6968656/ Reumatologia e crenologia: realtà e prospettive]” [Rheumatology and crenology: current status and prospects]. La Clinica terapeutica vol. 93,6 (1980): 607–619.The utilization of mineral springs for therapeutic purposes.*craunology
    criminologyThe scientific study of the nature, extent, management, causes, control, consequences, and prevention of criminal behavior, both on the individual and social levels.
    criteriologyCriteriology, N.Oxford English Dictionary. Oxford University Press, June 2024.#The part of logic dealing with the establishment of criteria.
  • The study of how judgments can be made solely based on specific criteria.
  • crustaceologyThe branch of zoology dealing with crustaceans.*carcinology
    • malacostracology
    • crustalogy
    cryobiologyThe study of biological material or systems at temperatures below normal.
    cryologyThe study of very low temperatures and related phenomena.
    cryopedologyThe study of frozen grounds and intensive frost action.
    cryoseismologyPodolskiy, E.A. and Walter, F. "Cryoseismology". Reviews of Geophysics, vol. 54, no. 4 (2016) pp.708-758. doi.org/10.1002/2016RG000526The study of cryoseism, also known as an ice quake or a frost quake.
    cryptologyThe study and practice of analyzing encoded messages, to decode them.*cryptography
    cryptozoologyA pseudoscience involving the search for creatures whose existence has not been proven due to lack of evidence.
    crystallologyCrystallology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of the crystalline structure of inorganic bodies.
    ctetologyCtetology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The branch of biology that studies the origin and development of acquired characteristics.
    curiologyCuriology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of picture writing, especially crude hieroglyphics.*kuriology
    cyclonologyCyclonology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of cyclones.
    cyesiology"[https://www.thefreedictionary.com/cyesiology cyesiology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of gestation and pregnancy.
    cynologyThe study of dogs.
    cytologyThe study of cells.
    cytomorphology“[https://www.merriam-webster.com/medical/cytomorphology Cytomorphology].” Medical Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of the structure of cells.
    cytopathologyA branch of pathology that studies and diagnoses diseases on the cellular level.
    cytophysiology“[https://www.merriam-webster.com/medical/cytophysiology Cytophysiology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The physiology of cells.
    cytotechnologyThe study of cells to detect cancer and other abnormalities.

    D

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    DacologyThe study of ancient Dacia and its culture and antiquities.
    dactyliology{{Cite web |title=Definition of 'dactyliology' |url=https://www.collinsdictionary.com/us/dictionary/english/dactyliomancy |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}#The study of finger rings.

    1. The study of gem engraving.
    style="background: #ffdead"|dactylology{{FULLPAGENAME}}#ZThe representation of the letters of a writing system and sometimes numeral systems using only the hands, especially by the deaf; fingerspelling.
    DantologyDantology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of Dante Alighieri and his works.
    defectology{{Cite web |title=defectology |url=https://dictionary.apa.org/defectology |access-date=2024-09-25 |website=APA Dictionary of Psychology |publisher=American Psychological Association |language=en}}A branch of science that is concerned with the study of the principles and characteristics of the development of children with physical and mental defects and the problems of their training and upbringing. Also describes the training of teachers of handicapped children. (Used in the former Soviet Union.)
    style="background: #ffdead"|dekalogy{{Cite web |title=Definition of 'dekalogy' |url=https://www.collinsdictionary.com/us/dictionary/english/dekalogy |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}{{FULLPAGENAME}}#ZA series of ten related works.
    deltiologyThe study and collection of postcards.
    demology{{Cite web |title=Definition of 'demology' |url=https://www.collinsdictionary.com/us/dictionary/english/demology#:~:text=(d%C9%9Bm%CB%88%C9%92l%C9%99d%CA%92%C9%AA%20),human%20populations%2C%20activities%2C%20and%20behaviour |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of human populations, activities, social conditions, and behavior.
    demonologyThe study of demons, especially the incantations required to summon and control them.*daemonology
    dendroarchaeology{{efn|name=fn3}}In archaeology, the science that uses dendrochronology to date wooden material from archaeological sites.
    dendrochronologyThe science that uses the spacing between the annual growth rings of trees to date their exact year of formation.
    dendroclimatologyThe science that uses dendrochronology to reconstruct historical climate conditions.
    dendroecology{{Cite web |title=Dendroecology {{!}} Laboratory of Tree-Ring Research |url=https://ltrr.arizona.edu/dendroecology |access-date=2024-09-13 |website=University of Arizona}}The science that uses dendrochronology to analyze historic ecological processes.
    dendrogeomorphology{{Citation |last=Stoffel |first=M. |title=12.9 Dendrogeomorphology: Dating Earth-Surface Processes with Tree Rings |date=2013-01-01 |work=Treatise on Geomorphology |pages=125–144 |editor-last=Shroder |editor-first=John F. |url=https://www.sciencedirect.com/science/article/pii/B9780123747396003262 |access-date=2025-06-11 |place=San Diego |publisher=Academic Press |doi=10.1016/b978-0-12-374739-6.00326-2 |isbn=978-0-08-088522-3 |last2=Luckman |first2=B. H. |last3=Butler |first3=D. R. |last4=Bollschweiler |first4=M.}}The science that uses dendrochronology to study changes to the Earth's surface over time.
    dendrohydrology{{Cite journal |last1=Loaiciga |first1=Hugo A. |last2=Haston |first2=Laura |last3=Michaelsen |first3=Joel |date=May 1993 |title=Dendrohydrology and Long-Term Hydrologic Phenomena |url=https://agupubs.onlinelibrary.wiley.com/doi/10.1029/93RG00056 |journal=Reviews of Geophysics |language=en |volume=31 |issue=2 |pages=151–171 |doi=10.1029/93RG00056 |bibcode=1993RvGeo..31..151L |issn=8755-1209 |via=AGU}}The science that uses dendrochronology to investigate and reconstruct hydrologic processes, such as river flow and past lake levels.
    dendrologyThe study of trees.
    dendropyrochronologyThe use of tree rings to study and reconstruct the history of wild fires.
    deontologyThe study of the nature of duty and obligation.
    dermatologyThe study of skin.
    dermatopathologyA subspecialty of dermatology and pathology and to a lesser extent surgical pathology that focuses on the study of cutaneous (skin) diseases at a microscopic and molecular level.
    dermatovenerology{{Cite book |last=Prohic |first=Asja |url=https://link.springer.com/book/9783031661303 |title=Dermatovenerology Textbook |publisher=Springer |year=2024 |isbn=978-3-031-66130-3 |language=en}}The study of skin disease and sexually transmitted disease and how symptoms of STD's appear on the skin.
    dermonosologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/766787/all/dermonosology Dermonosology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Taber's Online,The science of nomenclature and classification of skin diseases.
    desmidiologyDesmidiology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 24 September 2024.The study of single-celled algae.
    desmologyThe study of ligaments.
    diabetologyThe study of Diabetes mellitus.
    diabologyDesmidiology.” Dictionary. Merriam-Webster. Merriam-Webster.com. Accessed September 24, 2024.The study of the devil and beliefs of the devil in religion.
    style="background: #ffdead"|dicaeologyDicaeology, N.” Oxford English Dictionary. Oxford University Press, July 2023.{{Efn|name=Field of Study}}An excuse or justification.
    dialectologyThe scientific study of linguistic dialect, a sub-field of sociolinguistics.
    dinosaurologyThe branch of paleontology that focuses on studying dinosaurs.
    diplomatologyDiplomatology, N.Oxford English Dictionary. Oxford University Press, July 2023.#The analysis of original texts or documents.
  • The study of diplomats.
  • The study of diplomatics.
  • dipterologyThe study of flies (order Diptera).
    style="background: #ffdead"|dittologyDittology, N.Oxford English Dictionary. Oxford University Press, July 2023.{{FULLPAGENAME}}#ZA double reading or twofold interpretation of a text.
    docimologyDocimology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study or act of scientific testing or assaying metals and ores.
    documentology#The study of the recording and retrieval of information.
  • The study of historical documents and data.
  • dogmatologyDogmatology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of religious dogma.
    dosiologydoi:10.1093/OED/3845949798.” Oxford English Dictionary. Oxford University Press, July 2023.The study of dosages of drugs.*dosology
    dosologyThe study of dosages of drugs.*dosiology
  • posology
  • style="background: #ffdead"|doxology{{FULLPAGENAME}}#ZA short hymn of praises to God in various forms of Christian worship, often added to the end of canticles, psalms, and hymns.
    draconologyThe study of dragons.*dragonology
    dragonologyThe study of dragons.*draconology
    dramatologyThe practice of viewing all symptoms as valid communications, including words, posture, tone of voice, and movements of the face and limbs; introduced by Henry Zvi Lothane.
    DravidologyThe study of the Dravidian languages, literature and culture.
    dronologyA genre of music which heavily utilizes drones. Also used to describe the use of drones in music.
    style="background: #ffdead"|duology{{FULLPAGENAME}}#ZA pair of related novels, plays, or movies.
    dysmorphologyThe study of abnormalities of physiological development.*teratology
    dysteleologyThe philosophical view that existence has no telos or final cause from purposeful design.

    E

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

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    ----Alternative spellings

    ecclesiologyThe theological study of the Christian Church.
    eccrinologyThe study of the secretion of the eccrine glands.
    echinologyEchinology.” Dictionary, Merriam-Webster. via Merriam-Webster.com .Accessed 24 September 2024.The study of echinoderms.
    ecohydrologyThe study of the interactions between water and ecosystems.
    ecologyThe scientific study of interactions among organisms and their environment.
    ecophysiologyThe study of the adaptation of an organism's physiology to environmental conditions.*environmental physiology

    • physiological ecology
    ecopsychologyThe study of the relationship between human beings and the natural world through ecological and psychological principles.
    ecotoxicologyThe study of the effects of toxic chemicals on biological organisms, especially at the population, community, ecosystem level.
    edaphologyA soil science concerned with the influence of soils on living things, particularly plants.
    editology#An epistemological system that seeks to "define the knowledge as a set of texts, discourses (and thus terms), and to assign the scientificity of those texts to the very conditions of their publishing, the manner they are accepted by the international scientific community" developed by Jean C. Baudet.
    1. The study of editing.
    eidology"[https://www.thefreedictionary.com/eidology eidology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of mental imagery.
    EgyptologyThe study of ancient Egyptian history, language, literature, religion, architecture and art from the 5th millennium BC until the end of its native religious practices in the 4th century AD.
    electrobiology“[https://www.merriam-webster.com/medical/electrobiology Electrobiology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com . Accessed 24 September 2024.The study of the production and use of electricity by biological organisms.
    electrology#The practice and study of electrical epilation to permanently remove human hair.
  • The branch of physical science that deals with electricity and its properties.
  • electrophysiologyThe study of the electrical properties of biological cells and tissues.
    style="background: #ffdead"|electrotechnology{{FULLPAGENAME}}#ZThe technological and industrial applications of electricity.
    emblematologyEmblematology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of emblems.
    embryologyThe branch of biology that studies the development of gametes (sex cells), fertilization, and development of embryos and fetuses.
    emetologyThe study of the causes of emesis (vomiting).
    emmenologyEmmenology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of menstruation.
    emotionologyStearns, Peter N., and Carol Z. Stearns. “Emotionology: Clarifying the History of Emotions and Emotional Standards.” The American Historical Review 90, no. 4 (1985): 813–36. , accessed September 14, 2024.#The way a group of people think and speak about their emotions.
  • The multidisciplinary study of emotions.
  • encephalologyEncephalology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study of the brain and its function, structure, and anatomy, and diseases.
    endemiology{{Cite web |title=endemiology |url=https://www.oxfordreference.com/display/10.1093/oi/authority.20110803095750983 |access-date=2024-09-14 |website=Oxford Reference |language=en }}The study of endemic diseases.
    endocrinologyA branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones.
    engysseismologyEngysseismology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 24 September 2024.The branch of seismology that deals with earthquake shocks registered in or near the region of disturbance.
    enigmatologyThe study of puzzles.*metagrobology
    enologyThe study of wines.*oenology
    enteradenologyEnteradenology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study of the gastrointestinal tract and glands.
    enterologyThe study of the intestinal tract.
    entomologyThe scientific study of insects, a branch of zoology.
    entozoologyEntozoology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of entozoa, a type of microscopic parasitic worm.
    enzymologyThe branch of science that studies enzymes.
    epidemiologyThe study and analysis of the patterns, causes, and effects of health and disease conditions in defined populations.
    epileptologyThe branch of neurology that studies epilepsy.
    epiphytologyEpiphytology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 24 September 2024.The study of the character, ecology, and causes of plant diseases, especially epiphytotic outbreaks.
    epistemologyThe branch of philosophy concerned with the theory of knowledge.
    epizootiologyThe study of disease patterns within animal populations.*epizoology
    • veterinary epidemiology
    equinologyThe study of horses.*hippology
    eremologyEremology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 24 September 2024.The study of deserts.
    ergology{{Cite book |last=Denami |first=Maria |title=Handbook of Research on Operational Quality Assurance in Higher Education for Life-Long Learning |last2=Marquet |first2=Pascal |publisher=Information Science Reference |year=2019 |isbn=9781799812388 |page=25 |chapter=Fancy or Efficiency?: Which Are the Guidelines for an Effective Training on VLEs? A Crash Case in Anti-Cancer Pharmaceutical Production |doi=10.4018/978-1-7998-1238-8.ch014}}#The study of the psychological effects of work, or work patterns, especially the causes of work-related stress (job stress).
    1. In ethnology, knowledge originating from the study of the object culture of non-European traditional societies.
    erotology“[https://www.merriam-webster.com/medical/erotology Erotology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 24 Sep. 2024.The study of sexual stimuli and behavior.
    style="background: #ffdead"|Ertology{{Efn|name=Field of Study}}Fan activities based on Ertar, an alternative reality project, created by a group of Czech science fiction fans.
    escapology

    |The practice or study of escaping from restraints or other traps; escape art.

    |

    eschatologyA part of theology concerned with the final events of history, or the ultimate destiny of humanity.
    EskimologyA complex of humanities sciences studying languages, history, literature, folklore, culture, and ethnology of people speaking Eskimo–Aleut languages and Eskimo (InuitYupik)–Aleut peoples in chronological and comparative context.*inuitology
    EsperantologyThe study of Esperanto.
    ethnoarcheology{{efn|name=fn3}}The ethnographic study of people for archeological reasons, usually through the study of the material remains of a society.
    ethnobiologyThe scientific study of the way living things are treated or used by different human cultures.
    ethnoecologyThe scientific study of how different groups of people living in different locations understand the ecosystems around them, and their relationships with surrounding environments.
    ethnoichthyology

    |The branch of anthropology that examines human knowledge of fish, the uses of fish, and the importance of fish in different human societies.

    |

    ethnologyThe branch of anthropology that compares and analyzes the characteristics of different people and the relationship between them.
    ethnomethodologyThe study of methods people use for understanding and producing the social order in which they live.
    ethnomusicologyThe study of the music of different cultures and their cultural contexts, especially non-Western ones.
    ethnomycologyThe study of the historical uses and sociological impact of fungi.
    ethnopsychologyThe study of alternative perceptions of the mind and its behavior.
    ethologyThe scientific and objective study of non-human animal behavior rather than human behavior, usually with a focus on behavior under natural conditions, and viewing behavior as an evolutionarily adaptive trait.
    etiology#The study of causation, or origination.

    1. The causes of diseases or pathologies.
    *aetiology
    • ætiology
    • aitiology
    etruscologyThe study of the ancient Italian civilization of the Etruscans.
    etymologyThe study of the history of words, their origins, and how their form and meaning have changed over time.
    style="background: #ffdead"|euchology{{Efn|name=Field of Study}}One of the chief liturgical books of the Eastern Orthodox Church and Eastern Catholic Churches, containing the portions of the services which are said by the bishop, priest, or deacon.
    exoarcheology{{efn|name=fn3}}Argued to be the same as xenoarcheology, a fictional science concerned with the physical remains of alien cultures. It may also mean the study of human activities in a space environment.
    exobiologyThe branch of biology dealing with extraterrestrial lifeforms.*astrobiology
    exogeologyA planetary science discipline concerned with the geology of the celestial bodies such as the planets and their moons, asteroids, comets, and meteorites.*astrogeology
  • planetary geology
  • exometeorologyThe study of atmospheric conditions of exoplanets and other non-stellar celestial bodies outside the Solar System, such as brown dwarfs.
    exomoonologyThe search for and study of exomoons.
    exoplanetologyAn integrated field of astronomical science dedicated to the search and study of exoplanets (extrasolar planets).

    F

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    fairyologyFairyology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of fairies.
    faunologyFaunology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The branch of zoology that deals with the geographical distribution of animals.*zoogeography
    felinologyThe study of cats.
    fermentology“Fermentology.” Dictionary. Merriam-Webster,. via Merriam-Webster.com. Accessed 26 Sep. 2024.The study of ferments and fermentation.*zymology
    ferroequinologyThe study of railways in general, but especially locomotives.
    festologyFestology, N.” Oxford English Dictionary. Oxford University Press, September 2024.

    |A type of martyrology that studies ecclesiastical festivals.

    |

    • festilogy
    fetologyThe scientific study of fetuses.*foetology
    filicologyThe study of ferns.
    filmology{{Citation |last1=Kuhn |first1=Annette |title=filmology |date=2012-12-20 |work=A Dictionary of Film Studies |url=https://www.oxfordreference.com/display/10.1093/acref/9780199587261.001.0001/acref-9780199587261-e-0288#:~:text=filmology%20(filmologie)&text=An%20academic%20movement%20established%20in,of%20...%20... |access-date=2024-09-13 |publisher=Oxford University Press |language=en |doi= |isbn=978-0-19-958726-1 |last2=Westwell |first2=Guy}}A 1940s movement of theoretical study relating to film.* filmologie
    flatologyThe study of flatulence.
    fluviology“Fluviology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study of watercourses or rivers.
    fluviomorphology"[https://encyclopedia2.thefreedictionary.com/fluviomorphology fluviomorphology]." McGraw-Hill Dictionary of Scientific & Technical Terms, 6th edition. The McGraw-Hill Companies, Inc., 2003. via The Free Dictionary by Farlex, accessed September 26, 2024.The study of a river channel and the network of tributaries within the river basin.*fluvial geomorphology
  • river morphology
  • fontology{{Cite web |title=Definition of fontology |url=https://www.webster-dictionary.org/definition/fontology |access-date=2024-09-14 |website=Webster's Online Dictionary}}The study of fonts, or electronic typefaces.
    formicologyThe study of ants.*myrmecology
    fossilologyFossilology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of fossils.* paleontology
    fromology"[https://www.thefreedictionary.com/fromology fromology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of cheese.
    fulminologyThe study of lighting
    fungologyThe study of fungi.*mycology
    futurologyThe study of postulating possible, probable, and preferable futures and the worldviews and myths that underlie them.

    G

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    galvanologyGalvanology, N.Oxford English Dictionary. Oxford University Press, July 2023,.The study of galvanism (of biology, physics, and chemistry).
    gametologyThe study of gametes.
    garbologyThe study of modern refuse and trash as well as the use of trash cans, compactors, and various types of trash can liners.
    gastroenterologyThe branch of medicine focused on the digestive system and its disorders.*gastrology
    gastrologyThe branch of medicine focused on the digestive system and its disorders.*gastroenterology
    gelotologyThe study of humour and laughter.
    gemologyThe scientific study dealing with natural and artificial gemstone materials.*gemmology
    genecologyA branch of ecology which studies the gene frequency of a species relating to their population distribution in a particular environment.
    genesiologyGenesiology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of reproduction.
    geoarcheology{{efn|name=fn3}}A multi-disciplinary approach which uses the techniques and subject matter of geography, geology and other Earth sciences to examine topics which inform archeological knowledge and thought.*geoarchæology
    geobiologyAn interdisciplinary field of scientific research that explores interactions between the biosphere and the lithosphere and/or the atmosphere.
    geochronologyThe science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves.
    geoecologyThe interdisciplinary study of geography and ecology.
    geohydrologyThe area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust (commonly in aquifers).*hydrogeology
    geology#An earth science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which they change.

    1. The study of the solid features of any celestial body (such as the geology of the Moon or Mars).
    2. The geological features of an area.
    geomorphologyThe scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical, or biological processes operating at or near the Earth's surface.
    geomythologyThe study of alleged references to geological events in mythology.
    geotechnologyGeotechnology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of how earth, rock, and subterranean water affect the planning, execution, and operation of engineering projects.
    geotectologyGeotectology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26Septemberr 2024.The study of the structure of the Earth's crust; geotectonics.*structural geology
    gephyrology{{Cite web |date=2015-06-29 |title=Taking architectural history to the bridge: International Bridges Group inaugural meeting report |url=https://medievalartresearch.com/2015/06/29/international-bridges-group-inaugural-meetings/ |access-date=2024-09-13 |website=Medieval Art Research |language=en}}A neologism for the study of bridges and naturally occurring arches or bridge like structures.
    geratologyThe study of elderly people and senility; geriatrics.*gerontology
    gerodontology{{Cite web |date=2023-04-24 |title=Gerodontology |url=https://www.nature.com/collections/ihdfhbiegd |access-date=2024-09-13 |website=Nature |language=en}}The study of dentistry in elderly people.
    gerontologyThe study of the social, psychological, cognitive, and biological aspects of aging; geriatrics*geratology
    ghostologyThe learning, teaching, knowledge, or study of ghosts, spirits, and the supernatural; ghostlore.
    gigantologyGigantology, N.” Oxford English Dictionary. Oxford University Press, December 2023.The study or description of giants.
    gizmology{{Cite web |title=The Gizmology Group |url=https://www.gizmology.com/#:~:text=giz.mol.o.gy,of%20Gizmology%20in%20Vancover,%20BC. |access-date=2025-06-11 |website=www.gizmology.com}}{{Cite web |title=Definition of 'gizmology' |url=https://www.collinsdictionary.com/us/dictionary/english/gizmology |access-date=September 13, 2024 |website=Collins |publisher=Collins English Dictionary}}

    |The study and practice of creating and using complex devices or gadgets,

    |

    glaciologyThe scientific study of glaciers, or more generally, ice and natural phenomena that involve ice.
    glossology#The study of the tongue and its diseases.

    1. The definition and explanation of terms in constructing a glossary.
    2. The scientific study of language change over time; historical linguistics.
    glottochronologyThe study of languages to determine when they diverged from being the same language.
    glottologyThe study of languages; linguistics
    glycobiologyThe study of the structure, biosynthesis, and biology of saccharides (sugar chains or glycans) that are widely distributed in nature.
    glyptologyThe study or art of engraving gems or glyptics.
    gnathologyThe study of the masticatory system.
    gnomologyGnomology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.An anthology of gnomic poetry or gnomes.
    gnomonologyGnomonology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of gnomonics.
    gnoseologyThe scientific or philosophical study of knowledge.*gnosiology
    gnosiologyThe scientific or philosophical study of knowledge.*gnoseology
    gnotobiologyThe study of animals in a germ-free environment
    googology#The study of the number googol.
  • The mathematical study of large numbers.
  • graminologyThe scientific study of the grasses (family Poaceae).*agrostology
    grammatologyThe scientific study of writing systems or scripts.
    graphologyThe analysis of the physical characteristics and patterns of handwriting purporting to be able to identify the writer.
    graphopathology"[https://www.thefreedictionary.com/graphopathology graphopathology.]" -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of handwriting as a symptom of mental or emotional disorder.
    gynecologyThe medical practice dealing with the health of the female reproductive systems (vagina, uterus and ovaries) and the breasts.*gynæcology
    • gynaecology
    gynoroentgenologyThe study of radiologic imaging of the gynecologic parts of the female human body in order to make a radiologic diagnosis of a gynecologic disease.*gynecological roentgenology
  • gynæcological roentgenology
  • gynaecological roentgenology
  • H

    class="wikitable" style="width:100%;"
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    hemorheology{{efn|name=fn2}}The study of flow properties of blood and its elements of plasma and cells.*blood rheology
    hagiology

    |A study or biography of a saint or an ecclesiastical leader; a hagiography.

    |

    hamartiologyThe branch of Christian theology that studies sin.
    hamburgerologyA course of study introduced by McDonald's to train people to work in its fast food restaurants.
    style="background: #ffdead"|haplology{{Efn|name=Field of Study}}In linguistics, the elimination of a syllable when two consecutive identical or similar syllables occur.
    hauntologyIn Derridan philosophy, the paradoxical state of the specter, which is neither being nor non-being.
    hedonologyThe study of the impact an injury or incident had on a person's lifestyle.
    helcologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/744059/all/helcology Helcology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Taber's Online.The study of ulcers.
    heliologyThe study of the sun.
    helioseismologyThe study of the propagation of wave oscillations, particularly acoustic pressure waves, in the Sun.
    helminthologyThe study of parasitic worms (helminths).
    hematology{{efn|name=fn2}}The branch of medicine concerned with the study, diagnosis, treatment, and prevention of diseases related to blood.
    hemerologyHemerology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of calendars.
    hemipterologyThe study of true bugs (order Hemiptera).
    hemopathologyThe branch of pathology which studies diseases of hematopoietic cells.
    henologyThe philosophical account or discourse on "The One" that appears most notably in the philosophy of Plotinus.
    heortologyThe study of religious festivals.
    hepaticologyThe study of hepatics (division Marchantiophyta).
    hepatologyThe branch of medicine that incorporates the study of liver, gallbladder, biliary tree, and pancreas as well as management of their disorders.
    herbologyThe study of the use of plants for medicinal purposes; herbal medicine/herbalism.*herbalogy
    heresiologyThe study of heresy.
    herpetologyThe branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians (gymnophiona)) and reptiles (including snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and the tuataras).
    style="background: #ffdead"|heterology[https://www.merriam-webster.com/medical/heterology “Heterology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.{{Efn|name=Field of Study}}#A lack of correspondence between parts that reflects a difference in origin.

    1. An abnormality or structural difference from what is considered normal.
    hexicology"[https://www.thefreedictionary.com/hexicology hexicology.]" -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of the relations of living creatures to other organisms, and to their surrounding conditions.*hexiology
    hexiologyThe study of the relations of living creatures to other organisms, and to their surrounding conditions.*hexicology
    hieroglyphologyThe study of hieroglyphics.
    hierologySacred literature or lore or the study of it.
    hippologyThe study of horses.*equinology
    hippopathologyHippopathology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of the diseases and treatment or pathology of the horse.
    histologyThe study of the microscopic anatomy of cells and tissues of plants and animals.
    histopathologyThe microscopic examination of tissue in order to study the manifestations of disease.
    histophysiologyHistophysiology.” Dictionary, Merriam-Webster. via'' Merriam-Webster.com. Accessed 26 September 2024.The physiology or study of the functions of the cells and tissues in health.
    historiologyThe study of history.
    histotechnologyThe study of the processes and procedures used in the preparation of slides for light microscopy.
    HittitologyThe study of the Hittites.
    hodologyThe study of pathways.
  • (neuroscience) The study of the interconnections of brain cells.
  • (psychology) A term introduced by Kurt Lewin (1890–1947) to describe paths in a person's "life space".
  • (philosophy) The study of interconnected ideas.
  • (geography) The study of paths.
  • HomerologyHomerology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of the poet Homer and his works.
    HomoeologyThe study of homoeologs, genes that originated by speciation but were brought back together in the same genome by allopolyploidization.
    homology#(anthropology and archeology). A type of analogy whereby two human beliefs, practices, or artifacts are separated by time but share similarities due to genetic or historical connections.
  • (specifically anthropology) A structure that is shared through descent from a common ancestor.
  • (biology) The existence of shared ancestry between a pair of structures, or genes, in different species.
  • (chemistry) The appearance of Homologous series homologs, a compound belonging to a series of compounds differing from each other by a repeating unit.
  • (mathematics, especially algebraic topology and abstract algebra) A general way of associating a sequence of algebraic objects such as abelian groups or modules to other mathematical objects such as topological spaces.
  • (psychology) A relationship between characteristics that reflects the characteristics' origins in either evolution or development.
  • (sociology) A structural resonance between the different elements making up a socio-cultural whole.
  • hoplologyA science that studies human combative behavior and performance.
    hormonology“[https://www.merriam-webster.com/medical/hormonology Hormonology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 Sep. 2024.The science or study of hormones.
    horologyThe art or science of measuring time and mechanical time-keeping devices.
    humorology#The study of humour and laughter.
  • Humorism
  • hydrobiologyThe science of life and life processes in water.
    hydroecology{{Cite journal |last=Palmer |first=Margaret A. |last2=Bernhardt |first2=Emily S. |date=2006 |title=Hydroecology and river restoration: Ripe for research and synthesis |url=https://onlinelibrary.wiley.com/doi/abs/10.1029/2005WR004354 |journal=Water Resources Research |language=en |volume=42 |issue=3 |doi=10.1029/2005WR004354 |issn=1944-7973}}The study of support systems in wetlands such as the interactions between water and wildlife habitats.
    hydrogeologyThe area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust (commonly in aquifers).*geohydrology
    hydrology#The scientific study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources, and environmental watershed sustainability.
  • (agriculture) The study of water balance components intervening in agricultural water management, especially in irrigation and drainage; agricultural hydrology.
  • hydrometeorologyA branch of meteorology and hydrology that studies the transfer of water and energy between the land surface and the lower atmosphere.
    hyetologyHyetology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 26, 2024.The scientific study of precipitation.
    hygiologyHygiology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The science and study of the preservation of health.
    hygrology#The study of bodily fluids.
  • The study of humidity.
  • hylologyHylology, N.” Oxford English Dictionary. Oxford University Press, June 2024.The doctrine or theory that matter is unorganized.
    hymenopterologyHymenopterology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 Sep. 2024.The study of the order Hymenoptera.
    hymnologyThe scholarly study of religious song, or the hymn.
    hypnologyThe scientific study of sleep.*somnology

    I

    class="wikitable" style="width:100%;"
    -ology Word

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    iamatologyThe study of medicinal remedies or therapeutics.*aceology
    iatrologyIatrology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of medicine.
    ichnolithologyIchnolithology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The branch of geology and biology that deals with traces of organismal behavior, such as footprints and burrows.*ichnology
    ichnologyThe branch of geology and biology that deals with traces of organismal behavior, such as footprints and burrows.*ichnolithology
    ichthyologyThe branch of biology devoted to the study of fish.
    iconology#A method of interpretation in cultural history and the history of art used by Aby Warburg, Erwin Panofsky, and their followers that uncovers the cultural, social, and historical background of themes and subjects in the visual arts.

    1. The study of visual imagery and its symbolism and interpretation, especially in social or political terms.
    ideology

    |

    1. A collection of doctrines or beliefs shared by members of a group.
    2. The study of the origin and nature of ideas.

    |

    idiomatologyIdiomatology, N.” Oxford English Dictionary. Oxford University Press, July 2023.A collection of idioms.
    idiomologyIdiomology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of idiom, jargon, or dialect.
    idiopsychologyIdiopsychology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The psychology of one's own mind.
    imagologyThe study of cultural stereotypes as presented in literature.
    immunohematology{{efn|name=fn2}}The study of the relationships between disorders of the blood and the immune system, especially antigen-antibody interaction.
    immunologyA branch of biomedical science that covers the study of immune systems in all organisms.
    immunopathologyThe branch of medicine that deals with immune responses associated with disease.
    implantologyThe science of or techniques involved in dental implants.
    IndologyThe academic study of the history and cultures, languages, and literature of the Indian subcontinent (most specifically the modern-day states of India, Pakistan, Bangladesh, Sri Lanka, Maldives, Nepal and the eastern parts of Afghanistan)
    infectiologyThe study of the diagnosis, treatment, and control of infections and infectious diseases.*infectology
    insectologyThe study of insects.*entomology
    InuitologyA complex of humanities sciences studying languages, history, literature, folklore, culture, and ethnology of people speaking Eskimo–Aleut languages and Eskimo (InuitYupik)–Aleut peoples in chronological and comparative context.*eskimology
    IranologyAn interdisciplinary field dealing with the study of history, literature, art, and culture of Iranian peoples.
    irenologyThe study of peace.
    iridologyAn alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a person's health; iridodiagnosis.
    IslamologyThe study of Islam.

    J

    class="wikitable" style="width:100%;"
    -ology Word

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    JapanologyThe study of Japan, its language, culture, and history.
    JinologyThe study of Jin Yong's novels.

    K

    class="wikitable" style="width:100%;"
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    karstologyThe study of karst formations.
    karyologyThe study of the nuclei of cells, especially with regard to the chromosomes which they contain.
    style="background: #ffdead"|Kibology{{Efn|name=Field of Study}}A parody religion, named after James "Kibo" Parry, the central figure.
    killologyThe study of the psychological and physiological effects of killing and combat on the human psyche.
    kinesiologyThe scientific study of human body movement and its physiological, mechanical, and psychological mechanisms.
    kinology“Kinology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The branch of physics that deals with the laws of motion.
    koniologyThe study of atmospheric dust and its effects.*coniology
    kookologyThe study of kooks, or eccentric people.
    KoreanologyThe study of Korea.
    Kremlinology#The study of the internal politics of the high members of the government of the USSR.

    1. The study of the internal politics of any powerful and secretive organization.
    ktenologyThe science of putting people to death, execution.
    KubrickologyThe study of Stanley Kubrick and his works.
    kymatologyThe study of wave motion.

    L

    class="wikitable" style="width:100%;"
    -ology Word

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    lalopathology"[https://www.thefreedictionary.com/lalopathology lalopathology]." -Ologies & -Isms. 2008. The Gale Group, Inc. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of speech disorders.
    laryngologyA branch of medicine that deals with disorders, diseases and injuries of the vocal apparatus, especially the larynx.
    lectinologyOsterne, Vinicius, J. S.; Nascimento, Kyria S.; Cavada, Benildo S.; Van Damme, Els J. M. "The future of plant lectinology: Advanced technologies and computational tools." BBA Advances, vol. 7, 2025, 100145. ISSN 2667-1603. doi.org/10.1016/j.bbadva.2025.100145.The study of lectin.
    lemologyThe study of plague and epidemic diseases.*loimology

    • epidemiology
    lepidopterologyA branch of entomology concerning the scientific study of moths and the three superfamilies of butterflies.
    leprologyThe study of leprosy.
    leptologyLeptology.” Dictionary. Merriam-Webster. via Merriam-Webster.com Accessed 26 Sep. 2024.#A minute and tedious discourse on trifling things.
    1. The study of the forms and structures of crystals; crystallography.
    lexicologyThe part of linguistics which studies words.
    lichenologyThe branch of mycology that studies the lichens, symbiotic organisms made up of an intimate symbiotic association of a microscopic alga (or a cyanbacterium) with a filamentous fungus.
    limacologyThe branch of zoology which deals with slugs.
    limnobiology{{Cite web |date=2009 |title=limnobiology {{!}} Dictionary of ichthyology |url=https://en_ichthyology.en-academic.com/10235/limnobiology |access-date=2025-06-11 |website=Academic Dictionaries and Encyclopedias |language=en}}The branch of biology that deals with animals and plants of fresh water.
    limnologyThe study of inland waters.
    lipidologyThe scientific study of lipids.
    lithoidology"[https://www.thefreedictionary.com/lithoidology lithoidology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of rocks.
    lithology#The study of rocks, with particular emphasis on their description and classification.
  • The description of the physical characteristics of a rock.
  • liturgiologyThe study of liturgy, a set of rituals that are performed, usually by a religion; liturgics.
    logology#The field of recreational linguistics, an activity that encompasses a wide variety of word games and wordplay.
  • The study of all aspects of science (the science of science)
  • The study of words in search for divine truth.
  • The study of logos.
  • The part of linguistics that studies words.
  • 5. lexicology
    loimologyLoimology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of pestilential diseases and plagues.*lemology
    • epidemiology
    ludologyThe study of games.
    lymphologyThe study of the lymphatic system.

    M

    N

    class="wikitable" style="width:100%;"
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    nanotechnologyThe manipulation of matter on an atomic, molecular, and supramolecular scale. Otherwise accepted as the manipulation of matter with at least one dimension sized from 1 to 100 nanometers.
    nanotribologyA branch of tribology which studies friction phenomenon at the nanometer scale.
    naologyNaology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of ecclesiastical or sacred buildings.
    narratologyThe theory and the study of narrative and narrative structure and the ways that these affect our perception.
    nasology

    |Parody classification of noses. The word entered dictionaries as "study of the nose".

    |

    necrology#A church register containing the names of those connected with the church who have died.

    1. A list of people who have died during a specific period.
    2. The study of death or the dead.
    3. A notice of death; an obituary.
    nematologyThe scientific study of nematodes.
    neoichnologyThe study of footprints and traces of extant animals.
    neology#The study or art of creating new words or neologizing.
  • The act of introducing a new word into a language.
  • The holding of novel or rational religious views.
  • neonatologyA subspecialty of pediatrics that consists of the medical care of newborn infants.
    neossologyNeossology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study of young birds.
    nephologyThe study of clouds.
    nephrologyThe study of kidneys.
    nerterologyNerterology, N.Oxford English Dictionary. Oxford University Press, July 2023.Any study that pertains to the dead or death.
    nessologyThe belief or study of the Loch Ness Monster.
    neurobiologyThe study of the nervous system including the brain.
    neuroendocrinologyThe study of the interaction between the nervous system and the endocrine system.
    neuroethologyThe study of animal behavior and its underlying mechanistic control by the nervous system.
    neurohypnologyNeurohypnology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study or practice of mesmerism or hypnotism.*neurypnology
    neurologyA branch of medicine dealing with neurological disorders.
    neuropathologyThe study of disease of nervous system tissue.
    neuropharmacologyThe study of how drugs affect cellular function in the nervous system.
    neurophysiologyA branch of physiology and neuroscience that is concerned with the study of the functioning of the nervous system.
    neuropsychologyThe study of the structure and function of the brain as it relates to specific psychological processes and behaviors.
    neuropterologyNeuropterology, N.Oxford English Dictionary. Oxford University Press,September 2024.The study of net-winged insects (order Neuroptera).
    neuroradiologyA subspecialty of radiology focusing on the diagnosis and characterization of abnormalities of the central and peripheral nervous system, spine, and head and neck using neuroimaging techniques.
    neurypnologyNeurypnology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study or practice of mesmerism or hypnotism.*neurohypnology
    nidologyNidology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 24 Sep. 2024.The study of birds' nests.*caliology
    nomologyThe study of laws.
    noologyThe systematic study and organization of everything dealing with knowing and knowledge.*noölogy
    noospherologyThe systematic study and organization of everything dealing with knowing and knowledge about Noosphere.
    nosetiology"[https://medical-dictionary.thefreedictionary.com/nosetiology nosetiology]." Farlex Partner Medical Dictionary. Farlex, 2012. via The Free Dictionary by Farlex. Accessed 24 Sep. 2024The study of the causes of disease.
    nosologyA branch of medicine dealing with the classification of disease.
    nostology{{Cite web |title=Definition of 'nostology' |url=https://www.collinsdictionary.com/us/dictionary/english/nostology#:~:text=Grammar-,nostology%20in%20American%20English,and%20problems%20of%20aging%3B%20gerontology |access-date=September 24, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of senility or the mental problems of aging.*gerontology
    numerologyThe study of the purported mystical relationship between numbers and the character or action of physical objects and living things.
    numismatologyThe study or collection of money (coins, tokens, medals, paper money); numismatics.

    O

    class="wikitable" style="width:100%;"
    -ology Word

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    oceanologyThe branch of Earth science that studies the ocean; oceanography.
    odologyOdology, N.Oxford English Dictionary. Oxford University Press, July 2023.The branch of science that studies odic force.
    odonatologyThe study of dragonflies and damselflies (order Odonata).
    odontology#The study of the structure and development of teeth.

    1. The branch of dentistry dealing with abnormalities of teeth.
    oecologyThe scientific study of interactions among organisms and their environment.*œcology
    • ecology
    oenologyThe science and study of all aspects of wine and winemaking except for vine-growing and grape-harvesting which pertains to viticulture.*enology
  • oinology
  • style="background: #ffdead"|ohnology{{Efn|name=Field of Study}}The state of paralogous genes that have originated by a process of whole-genome duplication.
    oinologyThe science and study of all aspects of wine and winemaking except for vine-growing and grape-harvesting which pertains to viticulture.*oenology
    olfactologyOlfactology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of smell.
    oligochaetologyOligochaetology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of earthworms (class Oligochaeta).
    ology

    |A subject of study, a branch of knowledge.

    |

    ombrologyOmbrology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of rain.
    omenologyOmenology, N.” Oxford English Dictionary. Oxford University Press, July 2023,.The study of omens, divination.
    omnibology"[https://www.thefreedictionary.com/omnibology omnibology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex, accessed September 24, 2024.The study of motor buses or omnibuses.
    oncologyThe branch of medicine that deals with the prevention, diagnosis, and treatment of cancer.
    oneirologyThe scientific study of dreams.
    style="background: #ffdead"|onologyOnology, N.Oxford English Dictionary. Oxford University Press, July 2023.{{Efn|name=Field of Study}}Foolish discourse.
    onomasiologyThe branch of lexicology that deals with concepts and the terms that represent them, in particular contrasting terms for similar concepts, as in a thesaurus.
    onomatologyThe study of the origin, history, and use of proper names; onomastics.
    ontology#(philosophy) The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist.

    1. (philosophy) The theory of a particular philosopher or school of thought concerning the fundamental types of entities in the universe.
    2. (logic) A logical system involving the theory of classes.
    3. (computer science) A structure of concepts or entities within a domain, organized by relationships; a system model.
    onychopathologyVenes, Donald, editor. "[https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/757580/all/onychopathology Onychopathology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. via Nursing Central.The study of nail disease.
    oologyThe study of eggs, especially those of birds.*oölogy
    ophidiologyThe study of snakes (clade Ophidia).*ophiology
    ophiologyThe branch of herpetology dealing with the study of snakes (clade ophidia).*ophidiology
    ophthalmologyThe branch of medicine that deals with the anatomy, physiology, and diseases of the eye.
    optology"[https://www.thefreedictionary.com/optology optology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary by Farlex. Accessed September 24, 2024.The science of testing eyes for lenses.
    orchidologyThe study of orchids (family orchidaceae).
    organologyThe study of musical instruments and their classification.
    orismologyThe identification, specification, and description of technical terms.
    ornithologyA branch of zoology dealing with the study of birds.
    orologyThe study of mountains.*montology
    orthology#(biology) Homologous sequences descended from the same ancestral sequence.
  • (language) The study of the correct use of words.
  • orthopterologyThe scientific study of the order Orthoptera.
    oryctologyOryctology, N.Oxford English Dictionary. Oxford University Press, July 2023.#The study of things dug out of the Earth, such as minerals and fossils.
  • The study of fossils, minerals, and rocks.
  • The study of minerals; oryctognosy.
  • osphresiologyOsphresiology, N.Oxford English Dictionary. Oxford University Press, July 2023.#The scientific study of smells.
  • The study of osmosis.
  • osteologyThe scientific study of bones.* bioarchaeology
    osteopathologyOsteopathy.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 24 Sep. 2024.The study of diseases of the bone.
    otolaryngologyThe branch of medicine that deals with conditions of the ear, nose, and throat (ENT) region.*otorhinolaryngology
    otologyA branch of medicine which studies normal and pathological anatomy and physiology of the ear (hearing and vestibular sensory systems and related structures and functions).
    otorhinolaryngologyThe branch of medicine that deals with conditions of the ear, nose, and throat (ENT) region.*otolaryngology
    ourology'[https://www.studylight.org/dictionaries/eng/web/o/ourology.html Ourology]'. Noah Webster's American Dictionary. 1828.The branch of medicine that focuses on surgical and medical diseases of the male and female urinary tract system and the male reproductive organs.*urology
    ovologyOvology, N.” Oxford English Dictionary. Oxford University Press, July 2023.#The study of eggs.
  • The study of ova.
  • P

    class="wikitable" style="width:100%;"
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    pedology

    |The study of soils in their natural environment.

    |

    paedologyThe study of children's behavior and development.
    paleoalgology{{efn|name=fn1}}The subdiscipline of paleobotany that deals with the study and identification of fossil algae and their evolutionary relationships and ecology.*paleophycology
    paleoanthropology{{efn|name=fn1}}The scientific study of human fossils, and the evolution of modern man.*paleanthropology
    paleobiology{{efn|name=fn1}}The study of fossils of plants and animals.
    paleobotany{{efn|name=fn1}}The branch of paleontology that deals with the study of plant fossils.*paleophytology
    paleoclimatology{{efn|name=fn1}}The study of climate changes taken on the scale of the entire history of Earth.
    paleodendrologyPaleodendrology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.{{efn|name=fn1}}The branch of paleobotany that deals with fossil trees.
    paleoecology{{efn|name=fn1}}The scientific study of reconstructing ecosystems in the past using fossils and subfossils.
    paleoentomology{{efn|name=fn1}}The study of prehistoric insects.
    paleoethnologydoi:10.1093/OED/1573940540.” Oxford English Dictionary, Oxford University Press, July 2023.{{efn|name=fn1}}The study of the races of early man.
    paleogeology{{efn|name=fn1}}The study of ancient geological features.
    paleohydrology{{efn|name=fn1}}The study of ancient rivers and other hydrological features.
    paleoichnology{{efn|name=fn1}}The branch of ichnology concerned with the study of trace fossils preserved in ancient rocks.
    paleoichthyology{{efn|name=fn1}}The study of fossil and ancient fish.*paleichthyology
    paleolimnology{{efn|name=fn1}}The study of paleoenvironments of inland waters by examination of sediment and fossils.
    paleologyPaleology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.{{efn|name=fn1}}The study of antiquities.
    paleometeorologydoi:10.1093/OED/8102673982Oxford English Dictionary, Oxford University Press, July 2023.{{efn|name=fn1}}The meteorology of the Earth's atmosphere during ancient times.
    paleontology{{efn|name=fn1}}The scientific study of life before, and sometimes including, the start of the Holocene Epoch.* fossilogy
    paleopathology{{efn|name=fn1}}The study of diseases in ancient humans.
    paleopedology{{efn|name=fn1}}The study of soils of past geological eras, from quite recent (Quaternary) to the earliest periods of the Earth's history.
    paleophycology{{efn|name=fn1}}The subdiscipline of paleobotany that deals with the study and identification of fossil algae and their evolutionary relationships and ecology.*paleoalgology
    paleophytology{{efn|name=fn1}}The study of ancient plants and plant fossils; paleobotany.
    paleornithology{{efn|name=fn1}}The study of ancient and prehistoric birds and their evolution.
    paleotempestology{{efn|name=fn1}}The study of past tropical cyclone activity using geological proxies as well as historical documentary records.
    paleozoology{{efn|name=fn1}}The branch of paleontology, paleobiology, or zoology dealing with the recovery and identification of organisms and the use of these fossils in the reconstruction of prehistoric environments and ancient ecosystems.
    palynologyThe study of dust, which more precisely includes contemporary and fossil palynomorphs, including pollen, spores, orbicules, dinocysts, acritarchs, chitinozoans and scolecodonts, together with particulate organic matter (POM) and kerogen found in sedimentary rocks and sediments.
    pantheologyPantheology, N.Oxford English Dictionary, Oxford University Press, December 2023.A branch of theology embracing all religions; a complete system covering all gods and religious systems.
    pantologyPantology, N.Oxford English Dictionary, Oxford University Press, July 2023.

    |

    1. A systematic view or survey of all types of knowledge.
    2. A compendium or encyclopedia of knowledge

    |

    papyrologyThe study of ancient literature, correspondence, legal archives, etc., as preserved in manuscripts written on papyrus.
    style="background: #ffdead"|paradoxology{{Efn|name=Field of Study}}#The use of paradoxes.

    1. A paradox.
    parapsychologyA field of study concerned with the investigation of paranormal and psychic phenomena which include telepathy, precognition, clairvoyance, psychokinesis, near-death experiences, reincarnation, apparitional experiences, and other paranormal claims.
    parasitologyThe study of parasites and how they interact with their hosts.
    paremiologyThe study of proverbs.
    style="background: #ffdead"|parisologyParisology, N.Oxford English Dictionary, Oxford University Press, July 2023.{{Efn|name=Field of Study}}The use of equivocal or ambiguous words.
    style="background: #ffdead"|paromology"[https://www.thefreedictionary.com/paromology paromology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed September 24, 2024{{Efn|name=Field of Study}}A concession to an adversary to strengthen one's argument.
    parthenologyParthenology, N.Oxford English Dictionary, Oxford University Press, July 2023.The study of virginity.
    pathobiologyThe branch of biology that deals with pathology with greater emphasis on the biological than on the medical aspects.
    pathology#(anatomy) The study of macro and microscopic abnormalities in tissues.
  • (Clinical pathology) Medical specialty that is concerned with the diagnosis of disease based on the laboratory analysis of bodily fluids, such as blood, urine.
  • (mathematics) Any mathematical phenomenon considered atypically bad or counterintuitive.
  • (Pathological science) A process by which the scientific process is distorted through wishful thinking or subjective bias.
  • (speech) The area of rehabilitative medicine that treats speech or swallowing impediments.
  • pathophysiologyThe physiological processes associated with disease or injury, or the study of it.*physiopathology
    patrologyThe study of the early Christian writers who are designated Church Fathers.
    PekingologyThe study of the behavior of the government of the People's Republic of China.*Pekinology
    pelology"[https://www.thefreedictionary.com/pelology pelology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of the therapeutic uses of mud.
    penologyThe study of the processes devised and adopted for the punishment and prevention of crime.
    style="background: #ffdead"|pentology{{Efn|name=Field of Study}}A series of five related works.
    perinatologyA branch of medicine that focuses on managing health concerns of the mother and fetus before, during, and shortly after pregnancy; Maternal-fetal medicine.
    periodontologyThe specialty of dentistry that studies supporting structures of teeth, as well as diseases and conditions that affect them; periodontics.
    style="background: #ffdead"|perissologyPerissology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed 26 Sep. 2024.{{Efn|name=Field of Study}}Superfluity of words, verbosity.
    personology#The assessment of a person's character or personality from outer appearance, especially the face.
  • A theory of personality psychology advanced by Henry Murray and others.
  • 1. physiognomy
    pestologyThe study of pests.
    petrologyThe branch of geology that studies the origin, composition, distribution, and structure of rocks.
    phaenology"[https://www.thefreedictionary.com/phaenology phaenology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of periodic plant and animal life cycle events and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (such as elevation).*phenology
    phagology“Phagology, N.Oxford English Dictionary, Oxford University Press. Accessed September 26, 2024.The study of habits related to eating or feeding.
    phantasmology“Phantasmology, N.Oxford English Dictionary, Oxford University Press, July 2023.The scientific study of spiritualistic manifestations and of apparitions.*spectrology
    pharmacoenvironmentology#A branch of pharmacology and pharmacovigilance that deals entry of chemicals or drugs into the environment after elimination from humans and animals as post-therapy.
  • The environmental impact of a drug.
  • pharmacologyThe branch of medicine and biology concerned with the study of drug action.
    pharologyThe scientific study of lighthouses and signal lights, their construction and illumination.*pharonology
    pharyngologyPharyngology, N.Oxford English Dictionary. Oxford University Press, July 2023.The scientific study of the pharynx and its diseases.
    phenologyThe study of periodic plant and animal life cycle events and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors.
    phenomenology#May be used to describe empirical research when used to describe measurement methods in some sciences, or empirical relationships.
  • (architecture) An aspect of philosophy based on the experience of building materials and their sensory properties.
  • (archeology) The use of sensory experiences to view and interpret an archeological site or cultural landscape.
  • (particle physics) A branch of particle physics that deals with the application of theory to high-energy experiments.
  • (philosophy) The philosophical study of the structures of experience and consciousness, or the school of philosophy founded by Edmund Husserl.
  • (psychology) The study of subjective experience.
  • (religion) The experiential aspect of religion that describes religious phenomena in terms consistent with the orientation of worshippers.
  • (mathematical model) A mathematical expression that relates several different empirical observations of phenomena to each other, in a way that is consistent with fundamental theory, but is not directly derived from theory.
  • pherologyWilley, David. “[http://www.jstor.org/stable/45351964 David Pimentel on the Ecology of Increasing Disease: Population Growth and Environmental Degradation].” Medicine, Conflict and Survival vol. 15, no. 3 (1999): 291–94. .The study of human carrying capacity of the Earth.
    philematologyThe science and study of kissing.
    philologyThe study of language in written historical sources.
    phlebologyThe medical specialty devoted to the diagnosis and treatment of venous disorders.*venology
    phonologyA branch of linguistics concerned with the systematic organization of sounds in languages.
    phorology"[https://www.thefreedictionary.com/phorology phorology]." -Ologies & -Isms.The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.

    The study of disease carriers and epidemic or endemic diseases.
    photobiologyThe scientific study of the interactions of light and living organisms.
    photoecology{{Citation |title=photoecology |work=The Free Dictionary |url=https://encyclopedia2.thefreedictionary.com/photoecology |access-date=2025-06-10}}The study of or application of aerial photography to ecology and land management.
    photogeologyPhotogeology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study or use of aerial photography to interpret geologic features.*photogeomorphology
    photogeomorphology{{Cite journal |last=Miller |first=Victor C. |date=1957 |title=Photogeomorphic Interpretation of the Plains of Western Canada |url=https://archives.datapages.com/data/cspg/data/005/005003/0044.htm |journal=Bulletin of Canadian Petroleum Geology |language=en-US |volume=5 |issue=3 |pages=44–47 |issn=0007-4802}}The study or use of aerial photography to interpret geologic features.*photogeology
    photologyPhotology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of light.
    phraseologyThe study of set or fixed expressions, such as idioms, phrasal verbs, and other types of multi-word lexical units (often collectively referred to as phrasemes).
    phrenologyA pseudomedicine primarily focused on measurements of the human skull, based on the concept that the brain is the organ of the mind and that certain brain areas have localized, specific functions or modules.*craniology
    phthisiologyThe study of or the care, treatment, and study of tuberculosis of the lung.
    phycologyThe scientific study of algae.*algology
    physicology"[https://www.thefreedictionary.com/Physicology Physicology]." Webster's Revised Unabridged Dictionary. G. & C. Merriam Co., 1913. via The FreeDictionaryy by Farlex. Accessed 26 September 2024.The study of matter and its motion and behavior through space and time, along with related concepts such as energy and force; physics.
    physiology#A branch of biology that deals with the functions and activities of life or living matter (as organs, tissues, or cells) and of the physical and chemical phenomena involved.

    1. The study and description of natural objects.
    physiopathologyThe physiological processes associated with disease or injury.*pathophysiology
    phytobacteriologyPhytobacteriology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.The study and diagnosis of bacterial diseases of plants.
    phytolithologyPhytolithology, N.Oxford English Dictionary, Oxford University Press, July 2023.The study of fossil plants.*paleophytology
    • phytopaleontology
    • paleobotany
    phytologyThe study of plants; botany.
    phytomorphologyThe study of the physical form and external structure (morphology) of plants.*plant morphology
    phytonematology{{Cite journal |last=Dropkin |first=V. H. |date=September 1988 |title=The Concept of Race in Phytonematology |url=https://doi.org/10.1146/annurev.py.26.090188.001045 |journal=Annual Review of Phytopathology |volume=26 |issue=1 |pages=145–161 |doi=10.1146/annurev.py.26.090188.001045|bibcode=1988AnRvP..26..145D }}The study of plant nematodes.
    phytopaleontology{{efn|name=fn1}}The study of ancient plants and plant fossils.*paleobotany
  • paleophytology
  • phytolithology
  • phytopathologyThe scientific study of diseases in plants.*plant pathology
    phytopharmacology#The study of the effects of drugs on plants.
    1. The study of medicine from plant sources.
    phytophenology{{Cite journal |last=Griffin |first=G. D. |date=1970-11-01 |title=Phytonematology |url=https://academic.oup.com/bioscience/article-lookup/doi/10.1093/bioscience/20.22.1224-a |journal=BioScience |language=en |volume=20 |issue=22 |pages=1224 |doi=10.1093/bioscience/20.22.1224-a |issn=0006-3568}}The study of phenology pertaining to plants.
    phytophysiologyThe study of the physiology of plants.
    phytosociologyThe branch of science which deals with plant communities, their composition and development, and the relationships between the species within them.
    style="background: #ffdead"|piphilology{{Efn|name=Field of Study}}The creation and use of mnemonic techniques to remember many digits of the mathematical constant {{pi}}.
    piscatologyPiscatology, N.” Oxford English Dictionary, Oxford University Press, July 2023.The study, art, or science of fishing.
    pisteologyPisteology, N.Oxford English Dictionary, Oxford University Press, July 2023.The science or study of faith.*pistology
    pistology"[https://www.thefreedictionary.com/pistology pistology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 26 September 2024.

    The branch of theology dealing with faith.*pisteology
    placentology{{Cite web |title=Definition of 'placentology' |url=https://www.collinsdictionary.com/us/dictionary/english/placentology |access-date=September 26, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of the placenta.
    planetologyThe scientific study of planets (including Earth), moons, and planetary systems (in particular those of the Solar System) and the processes that form them.
    planktologyThe study of plankton.
    plutologyPlutology, N.” Oxford English Dictionary, Oxford University Press, July 2023.The study of wealth.*aphnology
    pneumatologyThe study of spiritual beings and phenomena, especially the spiritual aspect of human beings and the interactions between humans and God.
    pneumologyThe study of the respiratory system and its organs.*pulmonology
    pneumonologyThe study of the respiratory system.
    podologyThe study of the feet.*podiatry

    • chiropody
    poenology"[https://www.thefreedictionary.com/poenology poenology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary by Farlex. Accessed 26 September 2024.The study of the processes devised and adopted for the punishment and prevention of crime.*penology
    pogonologyThe study of beards.
    polemologyThe study of human conflict and war.
    politicologyA synonym for the academic study of political science. It is infrequently used in English-speaking North America, yet the term is more commonly employed in Europe and elsewhere. Political science.
    politologyThe academic branch of political science that focuses on politics. However, this term is not in popular circulation within the U.S., perhaps as it may be confused with the preceding "ology."
    polychaetology{{Cite web |title=International Polychaetology Association |url=http://www.annelida.net/ipa-intr.html |access-date=2025-06-10 |website=www.annelida.net}}The study of worms belonging to the class Polychaete.
    pomologyA branch of botany that studies and cultivates fruit.
    ponerology#The study of evil.
    1. (political) An interdisciplinary study of social issues.
    posologyThe study of the dosages of drugs, especially the determination of appropriate dosages.
    potamologyThe study of rivers.
    praxeologyThe study of human action based on the notion that humans engage in purposeful behavior, as opposed to reflexive behavior.*praxiology
    primatologyThe scientific study of primates.
    proctologyThe branch of medicine dealing with the pathology of and surgery upon the colon, rectum, and anus.
    projectiology{{Cite web |date=2023-06-15 |title=Projectiology |url=https://en.iipc.org/projectiology/ |access-date=2025-06-10 |website=Instituto Internacional de Projeciologia e Conscienciologia |language=en-US}}The study of out-of-body experiences.
    promorphologyPromorphology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 26 September 2024.#The study of the organization of the egg, especially concerning the localization of subsequently developed embryonic structures.
  • The branch of morphology that studies the forms of organisms from a mathematical point of view.
  • protistologyThe scientific study of protists.
    protozoologyThe study of protozoa.
    psephologyA branch of political science which deals with the study and scientific analysis of elections.
    style="background: #ffdead"|pseudologyPseudology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 September 2024.{{Efn|name=Field of Study}}Falsehood of speech, the art of lying.
    style="background: #ffdead"|psilologyPsilology, N.Oxford English Dictionary. Oxford University Press, July 2023.{{Efn|name=Field of Study}}Trivial or vacuous talk.
    psychobiology#The study of the application of principles of biology to the study of physiological, genetic, and developmental mechanisms of behavior in humans and other animals.
  • The branch of psychology that interprets psychological phenomena in terms of adaptation to biological, environmental, and other factors.
  • *biological psychology,
    • biopsychology
    psychoneuroimmunologyThe study of the interaction between psychological processes and the nervous and immune systems of the human body.*psychoendoneuroimmunology
  • psychoneuroendocrinoimmunology
  • psychologyThe study of behavior and mind, embracing all aspects of conscious and unconscious experience as well as thought.
    psychopathologyThe scientific study of mental disorders.
    psychopharmacologyThe scientific study of the effects drugs have on mood, sensation, thinking, and behavior.
    psychophysiologyThe branch of psychology that is concerned with the physiological bases of psychological processes.
    psychosociologyThe study of problems common to psychology and sociology, particularly the way individual behavior is influenced by the groups the person belongs to.
    psychotechnology“[https://www.merriam-webster.com/medical/psychotechnology Psychotechnology].” via Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 September 2024.

    |

    1. Applying psychological principles and methods to study behavior in industry
    2. Using technology in psychological studies

    |

    pteridologyThe study of ferns and other pteridophytes.
    pterylologyPterylology.” Dictionary, Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.#The branch of ornithology that studies the areas upon which birds grow feathers; pterylography.

    1. The study of pterylosis.
    ptochologyPtochology, N.Oxford English Dictionary, Oxford University Press, July 2023.The study of pauperism or poverty.
    pulmonologyThe study of the respiratory system and its organs.*pneumology
    • respirology
    punnologyPunnology, N.Oxford English Dictionary, Oxford University Press, July 2023.The art or practice of making puns or paronomasia.
    pyramidologyThe study of pseudoscientific speculations regarding pyramids.
    pyretologyPyretology, N.Oxford English Dictionary, Oxford University Press, July 2023.The study of fevers.
    pyritologyPyritology, N.Oxford English Dictionary, Oxford University Press, July 2023.#The art of using a blowpipe, and often a charcoal block, to analyze minerals and metal salts.
    1. The study of pyrite or the pyrite group.
    pyrology{{Cite web |title=Definition of 'pyrology' |url=https://www.collinsdictionary.com/us/dictionary/english/pyrology |access-date=September 24, 2024 |website=Collins Dictionary}}The scientific study of the effects of heat or flame, often regarding explosives or chemical compounds.

    Q

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

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    quinologyQuinology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 24 Sep. 2024.The science of the cultivation of cinchona and its use in medicine as quinine.
    quintology

    |

    • A novel or piece of literature divided into five works.
    • The science of five{{Cite web |title=Quintology |url=https://www.jwpepper.com/quintology-10089642/p |access-date=2025-06-11 |website=www.jwpepper.com |language=en-US}}

    |

    • pentalogy

    R

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

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    rabdologyThe practice of performing arithmetic using Napier's bones named after a treatise by John Napier.*rhabdology
    raciologyThe study of races and ideas trying to justify the beliefs of racism, racialism, and other ideas of classifying individuals of different phenotypes into discrete races.*racial anthropology
    radiobiologyThe study of the effect of ionizing radiation on living things.
    radioecologyThe study of the effects of radiation and radioactive substances on ecological communities and natural ecosystems.
    radiogeology#The study of the distribution of radioactive elements in the Earth's crust.

    1. A technique of dating materials by examining their radioactivity.
    radiohydrology[https://encyclopedia2.thefreedictionary.com/radiohydrology "radiohydrology]." McGraw-Hill Dictionary of Scientific & Technical Terms, 6th edition. The McGraw-Hill Companies, Inc., 2003. via The Free Dictionary by Farlex. Accessed 27 September 2024.The study of hydrology as used in the processing of radioactive materials.
    radioimmunologyLarson, S M. “Radioimmunology. Imaging and therapy.” Cancer vol. 67,4 Suppl (1991): 1253-60. doi:10.1002/1097-0142(19910215)67:4+<1253::aid-cncr2820671523>3.0.co;2-jThe study of immunology using antigens or antibodies labelled with radioisotopes.
    radiology#A medical specialty that uses imaging to diagnose and treat diseases seen within the body.
  • The use of radioactive substances in the diagnosis and treatment of disease.
  • *roentgenology
    radiotechnologyRadiotechnology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 September 2024.#The technical application of any form of radiation to industry.
  • The technology of a radio.
  • reactologyReactology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 September 2024.The scientific study of psychological reactions.
    redologyThe academic study of Cao Xueqin's Dream of the Red Chamber, one of the Four Great Classical Novels of China.
    reflexology#An alternative medicine involving a system of massage and application of pressure used to relieve tension and illness.
  • The study and interpretation of behavior in terms of simple and complex reflexes.
  • respirologyThe study of diseases involving the respiratory tract.*pulmonology
    rhabdologyThe practice of performing arithmetic using Napier's bones named after a treatise by John Napier.*rabdology
    rheologyThe study of the flow of matter.
    rheumatologyThe study of rheumatic disorders.
    rhinologyThe study of the nose, including the sinuses.
    rickettsiology“[https://www.merriam-webster.com/medical/rickettsiology Rickettsiology].” Medical Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 Sep. 2024.The study of rickettsia.
    RipperologyThe study of Jack the Ripper, an unidentified serial killer
    roentgenologyThe study or use of radiation in the treatment or diagnosis of disease; radiography.*rontgenology
    • radiology
    • röntgenology
    röntgenology"röntgenology." [https://www.thefreedictionary.com/r%c3%b6ntgenology -Ologies & -Isms]. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 27 September 2024.The study or use of radiation in the treatment or diagnosis of disease. Radiography.*rontgenology
  • radiology
  • roentgenology
  • rumpology{{Cite journal |last=Glass |first=Jeremy |date=August 26, 2021 |title=A Professional Ass Reader Predicted My Future After Examining My Butt |url=https://www.cosmopolitan.com/sex-love/a37406924/psychic-butt-reading-rumpology/ |journal=Cosmopolitan |access-date=September 27, 2024}}The claimed ability to foretell the future by analyzing the characteristics of a person's buttocks.
    runologyThe study of the Runic alphabets, Runic inscriptions and their history.

    S

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

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    saprobiologySaprobiology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of decaying organic matter and animals, saprophytes, that derive nutrients from it.
    sarcologySarcology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of the soft parts of the body which include the studies: myology, angiology, neurology, and splanchnology.
    satanologySatanology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of Satan.
    scatologyThe study of feces.*coprology
    style="background: #ffdead"|Scientology{{Efn|name=Field of Study}}A body of religious beliefs and practices created in 1954 by American science fiction author L. Ron Hubbard.
    sclerochronologyThe study of periodic physical and chemical features in the hard tissues of animals that grow by accretion and the temporal context in which they formed.
    sedimentologyThe study of natural sediments (silt, clay, and sand) and of the processes by which they are formed.
    seismologyThe scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.
    selenologyThe scientific study of the moon.
    selenomorphology{{Cite web |title=Definition of 'selenomorphology' |url=https://www.collinsdictionary.com/us/dictionary/english/selenomorphology |access-date=September 27, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of the lunar surface and landscape.
    semasiologyA discipline within linguistics concerned with the meaning of a word independent of its phonetic expression.
    sematologySematology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 27 September 2024.#The science of language as expressed by signs.

    1. A branch of linguistics studying the meaning of words; semantics.
    semiology#(semiotics) The study of signs.
  • (medicine) The science of the signs or symptoms of disease.
  • The art of using signs in signaling.
  • 1, semeiology

    2. symptomatology

    senologyKubista, E. “[https://pubmed.ncbi.nlm.nih.gov/2402926/ Senologie--Ein Wort wird zum Begriff” [Senology--a word becomes a concept]]. Wiener klinische Wochenschrift vol. 102,15 (1990): 426-32. via PubMed, National Library of Medicine.The branch of medicine that deals with disorders of the breast.
    serologyThe scientific study of serum and other bodily fluids.
    serpentologyThe study of snakes.
    sexologyThe scientific study of human sexuality, including human sexual interests, behaviors, and functions.
    siagonology“Siagonology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of jawbones.
    sialosemeiologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/752587/all/sialosemeiology Sialosemeiology]." Taber's Medical Dictionary, 24th edition. F.A. Davis Company, 2021. via Taber's Online.The study and analysis of saliva in medical diagnoses.
    sindhologyThe study of the history, society, culture, and literature of Sindh, a province of Pakistan.
    sindonologyThe study of the Shroud of Turin.
    sinologyThe academic study of China primarily through Chinese language, literature, and history.
    siphonapterologySiphonapterology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 28, 2024.The scientific study of fleas and other insects of the order Siphonaptera.
    sitiologyThe study of food, diet, and nutrition; dietetics.
    sitologyThe branch of medicine dealing with nutrition and dietetics.*sitiology
    skatologySkatology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 28 Sep. 2024.The study of feces.*scatology

    • coprology
    sociobiologyA field of scientific study that is based on the hypothesis that social behavior has resulted from evolution and attempts to explain and examine social behavior within that context.
    socioecologyThe scientific study of how social structure and organization are influenced by an organism's environment.
    sociologyThe study of society, human social interaction, and the rules and processes that bind and separate people not only as individuals but as members of associations, groups, and institutions.
    sociophysiologyAn interdisciplinary field of research encompassing sociology and physiology that studies the physiological side of human interrelations.
    somatologyThe study or science of the human body's physical nature as a branch of anthropology.
    somatotypologyThe study of somatotypes.
    somnologyThe scientific study of sleep and related disorders.
    sonologyThe study of sound in a variety of disciplines.
    1. (medicine) The field of radiology using medical ultrasonography.
    2. (electronic music) The use or study of Acoustics, electronics, informatics, composition and psychoacoustics in electronic music and computer music.
    3. The use of sound for therapeutic and religious purposes.
    sophiology#A philosophical concept regarding wisdom, as well as a theological concept regarding the wisdom of God.
  • The science of ideas.
  • sophology"[https://dictionary.cambridge.org/dictionary/english/sophrology Definition of sophrology]" Cambridge Advanced Learner's Dictionary & Thesaurus. via Cambridge Dictionary. Accessed Septeember 28, 2024.The study of wisdom.
    soteriologyThe study of religious doctrines of salvation.
    SovietologyThe study of politics and policies of the Soviet Union and former communist states.
    spectrologyThe study of the interaction between matter and electromagnetic radiation and the analysis of the electromagnetic spectrum.
    speleologyThe study of caves and other karst features.*spelacology
    • spelæology
    • spelaeology
    spermology#The study of trivia.
    1. The study of seeds.
    sphagnologySphagnology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of sphagnum moss.
    sphygmologyThe study of the pulse and its use in diagnosis of disease.
    spinologyShi, Qi and Yong-Jun Wang. Zhong. " History and development of spinology" Journal of Chinese (integrative Medicine vol. 1, no. 4 (2003): 304-8, 320. doi:10.3736/jcim20030423. via PubMed.

    |The study of maintaining the alignment of the spine through non-surgical techniques.

    |

    splanchnologyThe study of the visceral organs.
    splenologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/767490/all/splenology Splenology]." Taber's Medical Dictionary, 24th edition. F.A. Davis Company, 2021. Taber's Online, accessed September 28, 2024.The study of the spleen and its diseases and functions.
    spongiology{{Cite web |title=Definition of SPONGIOLOGY |url=https://www.merriam-webster.com/dictionary/spongiology |access-date=2025-04-20 |website=www.merriam-webster.com |language=en}}The study of sponges (phylum Porifera).
    stasiologyStasiology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of political parties.
    stemmatologyThe study of multiple surviving versions of the same text to reconstruct a lost original; stemmatics.*stemmology
    stereologyThe three-dimensional interpretation of two-dimensional cross sections of materials or tissues.
    stichologyStichology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of poetic metres.
    stigmeologyThe art of punctuation.
    stomatologyThe study of the mouth and nearby organs and their disorders.
    storiologyStoriology, N.Oxford English Dictionary. Oxford University Press, July 2023.The study of folklore and legends.
    strabismologyFredrick D. R. "[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1771627/ The History of Strabismology: Hirschberg History of Ophthalmology: The Monographs: von Noorden GK, ed. Belgium: Wayenborgh, 2002]." British Journal of Ophthalmology. vol. 87, no. 4 (2003):518. via PubMed. Accessed September 28, 2024.

    |The study of strabismus

    |

    stringologyThe study of algorithms and data structures used for processing text strings in programming and computing.
    strollologyThe science of strolling.*promenadology
    stromatology"[https://www.thefreedictionary.com/Stromatology Stromatology]." Webster's Revised Unabridged Dictionary. G. & C. Merriam Co., 1913. via The Free Dictionary by Farlex. Accessed September 28, 2024.The study of stratified rocks.
    suicidologyThe scientific study of suicidal behaviour and suicide prevention.
    SumerologyThe study of the ancient Sumerian civilization.
    symbiologyThe study of symbiosis.
    symbologyThe study of symbols.

    1. The study of signs and symbols; semiotics.
    2. (iconography) The branch of art history which studies images.
    3. (Symbolic anthropology) A diverse set of approaches within cultural anthropology that view culture as a symbolic system that arises primarily from human interpretations of the world.
    4. An encoding scheme, particularly for barcodes.
    1. symbolology
    symbolology"[https://www.thefreedictionary.com/symbolology symbolology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary by Farlex. Accessed 28 September 2024.The study or use of symbols.*symbology
    symptomatologyA set of symptoms characteristic of a medical condition or exhibited by a patient.*symptomology
    symptomologyA set of symptoms characteristic of a medical condition or exhibited by a patient.*symptomatology
    synantherologyThe study of plants in the family Asteraceae.
    synchronologySynchronology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 28 Sep. 2024.The systematic arrangement of synchronous or contemporaneous events.
    syndesmologyThe study of ligaments.
    synechologySynecology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed 28 Sep. 2024.The theory of continuity or universal causation.*synechiology
    synecologyThe ecological study of whole plant or animal communities.
    synoecology"[https://www.thefreedictionary.com/synoecology synoecology]." Collins English Dictionary – Complete and Unabridged, 12th Edition. HarperCollins Publishers, 2014. via The Free Dictionary via Farlex. Accessed 28 September 2024.The study of relationships between species.
    synosteologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/729202/all/synosteology Synosteology]." Taber's Medical Dictionary, 24th edition. F.A. Davis Company, 2021. via Taber's Online, accessed September 28, 2024.The study of joints.*arthrology
    syphilologyThe scientific study of the diagnosis and treatment syphilis.
    systematology{{Cite web |title=Definition of 'systematology' |url=https://www.collinsdictionary.com/us/dictionary/english/systematology |access-date=September 28, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of nature regarding the formation of systems.
    systemologyThe study of systems and the logic of systems.

    T

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    TangutologyThe study of the culture, history, art, and language of the ancient Tangut people.
    tartarologyTartarology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of the underworld or doctrine pertaining to Hell.
    tautology#(rhetoric) A self-reinforcing pretense of significant truth.

    1. (grammar) The use of redundant words.
    2. (logic) A universal truth in formal logic.
    3. (rule of inference) A rule of replacement for logical expressions.
    taxologyThe technique or study of identifying, naming, and classifying things; taxonomy.
    technology

    |

    1. Machinery and equipment developed from the application of scientific knowledge.
    2. The collection of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation.
    3. The branch of knowledge and study of industrial and practical uses and industrial of engineering and applied science discoveries{{Cite web |title=Technology |url=https://dictionary.cambridge.org/us/dictionary/english/technology |access-date=June 11, 2025 |website=Cambridge Dictionary}}{{Citation |last=Lancaster |first=Lynne |title=technology |date=2016-03-07 |work=Oxford Classical Dictionary |url=https://oxfordre.com/classics/display/10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-6251 |access-date=2025-06-11 |language=en |doi=10.1093/acrefore/9780199381135.001.0001/acrefore-9780199381135-e-6251 |isbn=978-0-19-938113-5}}

    |

    • technicology
    | tectologyA Bogdanovian discipline that unified all social, biological, and physical sciences by considering them as systems of relationships.*tektology
    teleologyA thing's orientation toward a goal; its end-directedness.
    teleseismologyTeleseismology, N.” Oxford English Dictionary. Oxford University Press, September 2024.The study of teleseisms or very distant seismic events.
    telmatologyThe branch of physical geography concerned with the study of wetlands, such as marshes or swamps.
    tenontologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/765319/all/tenontology Tenontology]." Taber's Medical Dictionary, 24th edition. F.A. Davis Company, 2021. via Taber's Online, accessed September 28, 2024.The study of tendons.
    tephrochronologyA geochronological technique that uses discrete layers of tephra—volcanic ash from a single eruption—to create a chronological framework in which paleoenvironmental or archeological records can be placed.
    teratologyThe study of abnormalities of physiological development.*dysmorphology
    terminology#The study of terms and their use.
    1. A set of terms used for a specific application or study.
    terotechnology

    |The study of the costs associated with installing, commissioning, maintaining, replacing, and removing plant machinery and equipment{{Cite web |title=Terotechnology: What It is, How It Works, Example |url=https://www.investopedia.com/terms/t/terotechnology.asp |access-date=2025-06-11 |website=Investopedia |language=en}}

    |

    testaceology{{Cite web |title=Testaceology |url=https://webstersdictionary1828.com/Dictionary/testaceology |access-date=2024-09-28 |website=Websters Dictionary 1828 |language=en-US}}The study of testaceous mollusks.*conchology
    testudinologyThe study of turtles or tortoises (order Chelonia).*chelonology

    • cheloniology
    teuthologyA branch of malacology dealing with the study of cephalopods.
    textology#The study of the production of texts.
    1. A branch of linguistics that deals with texts as communication systems.
    thanatologyThe scientific study of death.
    thaumatologyThe study of miracles.
    theologyThe study of God and religious ideas.
    thereologyThereology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The science of healing and treatment of diseases; therapeutics.
    theriogenologyA branch of veterinary medicine concerned with reproduction.
    theriologyThe study of mammals.*mammalogy
    • mastology
    • therology
    thermology#The study of heat.
    1. (medicine) A science that uses infrared images of the body to diagnose problems.
    therologyThe study of mammals.*theriology
    • mastology
    • mammalogy
    ThracologyThe scientific study of Ancient Thrace and Thracian antiquities.
    thremmatologyThremmatology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The field of breeding or propagating plants and animals.
    threpsologyThrepsology, N.” Oxford English Dictionary. Oxford University Press, July 2023.The study of nutrition*alimentology
  • sitiology
  • sitology
  • thymologyThe study of those human aspects that precede or cause purposeful human behavior.
    TibetologyThe study of things related to Tibet, including its history, religion, language, politics and the collection of Tibetan articles of historical, cultural and religious significance.
    tidologyTidology, N.Oxford English Dictionary. Oxford University Press, July 2023.The science or study of tides.
    timbrology{{Cite web |title=Definition of 'timbrology' |url=https://www.collinsdictionary.com/us/dictionary/english/timbrology |access-date=September 28, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of postage stamps; philately.
    timology"[https://www.thefreedictionary.com/timology timology]." -Ologies & -Isms. The Gale Group, Inc., 2008. via The Free Dictionary by Farlex. Accessed 28 September 2024.The study of values or excellence.
    tocologyThe study of childbirth and obstetrics.*tokology
    tokologyThe study of childbirth and obstetrics.*tocology
    tonologyThe study of tone in human languages.
    topology#(mathematics) The properties of space that are preserved under continuous deformations, such as stretching and bending, but not tearing or gluing. This can be studied by considering a collection of subsets, called open sets, that satisfy certain properties, turning the given set into what is known as a topological space.
    1. (membrane topology) The specific orientation of transmembrane proteins.
    2. (electronics) The configuration of electronic components.
    3. (Network topology) Configurations of computer or biological networks.
    4. (Geospatial topology) The study or science of places with applications in earth science, geography, human geography, and geomorphology.
    5. (cartography) Used to describe a map (a topological map) that is greatly simplified but preserves the mathematical topology while sacrificing scale and shape.
    6. (phylogenetics) The branching pattern of a phylogenetic tree.
    toxicologyA branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals (poisons) on living organisms.
    toxology{{Cite web |title=Toxicology |url=https://www.niehs.nih.gov/health/topics/science/toxicology |access-date=2024-09-28 |website=National Institute of Environmental Health Sciences |language=en}}#The study of projectiles and trajectories.
  • Archery, or the study of archery.
  • trachelologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/754593/all/trachelology Trachelology]." Taber's Medical Dictionary, 24th edition. F.A. Davis Company, 2021. via Taber's Online, accessed September 28, 2024.The study of the neck and related injuries and disease.
    transitologyThe study of the process of change from one political regime to another.
    traumatology#(medicine) The study of wounds and injuries (traumas) caused by accidents or violence to a person, and the surgical therapy and repair of the damage.
  • (psychology) The study, development, and application of psychological and counseling services for people who have experienced extreme or traumatic events.
  • tribologyThe study of science and engineering of interacting surfaces in relative motion.
    trichologyThe branch of dermatology that deals with the scientific study of the health of hair and scalp.
    trolleyologyAn area of philosophy dealing with the kind of moral dilemma typified by the trolley problem.
    trophologyThe study of food combining.
    tropology

    |

    1. The use of figurative language in speech or writing.
    2. A study, treatise, or interpretation of figurative meanings in the Bible.

    |

    tsiologyThe study of or a treatise on tea.
    TurkologyThe study of the languages, history, literature, folklore, culture, and ethnology of people speaking Turkic languages and Turkic peoples.
    typhlologyThe study of blindness.
    typologyThe study of types.

    1. (farm) The classification of farms by the USDA.
    2. (Milewski's typology) A language classification system.
    3. (morphological) A way of classifying the languages of the world that groups languages according to their common morphological structures.
    4. (Oakeshott typology) A classification system of medieval swords.
    5. (Pavlov's typology) The first systematic approach to the psychophysiology of individual differences.
    6. (Psychological typologies) Classifications used by psychologists to describe the distinctions between people.
    7. (Sasang typology) A classification scheme in Traditional Korean medicine.
    8. (Sociopolitical typology) The four types, or levels, of a political organization.
    9. (anthropology) The division of culture by races.
    10. (archaeology) The classification of artifacts according to their characteristics.
    11. (linguistics) The study and classification of languages according to their structural features.
    12. (psychology) A model of personality types.
    13. (statistics) A concept in statistics, research design, and social sciences.
    14. (theology) In Christian theology, the interpretation of some figures and events in the Old Testament as foreshadowing the New Testament.
    15. (urban planning and architecture) The classification of characteristics common to buildings or urban spaces.
    16. (Johnson's typology) A classification of intimate partner violence (IPV).
    typtologyThe study of spirit rapping, or the theory that spirits communicate with the living by tapping various codes.

    U

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    ufologyThe study of reports, visual records, physical evidence, and other phenomena related to unidentified flying objects (UFO).
    universologyThe study and science of the universe.
    uranologyThe study of heavens.
    urbanologyThe branch of sociology that studies the problems of living in cities and towns.
    uredinologyUredinology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.The study of rust molds.*mycology
    urinologyVenes, Donald, editor. "[https://www.tabers.com/tabersonline/view/Tabers-Dictionary/771273/all/urinology Urinology]." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. via Taber's Online, accessed September 24, 2024.The study of urine and the urinary system.
    urogynecologyA surgical sub-specialty of urology and gynecology.
    urolithology"[https://medical-dictionary.thefreedictionary.com/urolithology urolithology]." Farlex Partner Medical Dictionary. Farlex, 2012. via The Free Dictionary by Farlex. Accessed September 24, 2024.The study of the formation, composition, effects, and removal of urinary calculi.
    urologyThe branch of medicine that focuses on surgical and medical diseases of the male and female urinary tract system and the male reproductive organs.
    uronology"[https://www.thefreedictionary.com/Uronology Uronology]." Webster's Revised Unabridged Dictionary. G. & C. Merriam Co., 1913. via The Free Dictionary by Farlex. Accessed September 24, 2024.The branch of medicine dealing with urine.

    V

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    vaccinologyThe study, development, and production of vaccines.
    valeologySoldatova, T. (1999). Valeology Comes to the Classroom. Russian Education & Society, 41(2), 87–98. via Taylor & Francis Online.The study of healthy living
    VaticanologyThe study of the politics, decisions, and functioning of the Vatican, Holy See, and Roman Catholic Church.
    velologyThe study and collection of vehicle tax discs.
    venereologyThe branch of medicine dealing with the study and treatment of sexually transmitted diseases.
    venology{{Cite web |title=Definition of 'venology' |url=https://www.collinsdictionary.com/us/dictionary/english/venology |access-date=September 12, 2024 |website=Collins |publisher=Collins English Dictionary}}The study of veins.*phlebology
    vermeologyThe study of worms.*helminthology
    vexillologyThe study of the history, usage, and symbolism of flags.
    victimologyThe study of the victims of crime, and especially of the reasons why some people are more prone to be victims.
    VietnamologyThe study of Vietnam.
    virologyThe study of viruses.
    vitaminology{{Cite journal |date=1950-09-09 |title=Vitaminology: The Chemistry and Function of the Vitamins |url=http://jama.jamanetwork.com/article.aspx?doi=10.1001/jama.1950.02920020130036 |journal=Journal of the American Medical Association |language=en |volume=144 |issue=2 |pages=210 |doi=10.1001/jama.1950.02920020130036 |issn=0002-9955|url-access=subscription }}The study of vitamins.
    vocologyThe science and practice of vocal habilitation, or vocal training and therapy.
    volcanologyThe study of volcanoes, lava, magma, and related geological, geophysical and geochemical phenomena.*vulcanology
    vulvologyMicheletti, Leonardo et al. “[https://pubmed.ncbi.nlm.nih.gov/12380451/ Vulvology. A proposal for a multidisciplinary subspecialty].” The Journal of Reproductive Medicine vol. 47,9 (2002): 715-7. via National Library of MedicineThe study of the vulva.

    W

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    webologyThe study of World Wide Web.

    ==X==

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    xenoanthropology{{Cite web |title=Xenoanthropology {{!}} Honors College |url=https://honorscollege.rutgers.edu/xenoanthropology |access-date=2024-09-12 |website=Rutgers University}}

    |The branch of xenology dealing with extraterrestrial cultures

    |

    • xenoarcheology
    xenoarcheology{{efn|name=fn3}}A fictional science, concerned with the physical remains of alien cultures.*{{dfn|1=exoarcheology|2=Disputed synonymity|title=exoarcheology;}}{{efn|name=fn3}}
    xenobiologyA subfield of synthetic biology dealing with the study of synthesizing and manipulating biological devices and systems.
    xenodochionologyXenodocheionology.” Dictionary. Merriam-Webster. via Merriam-Webster.com. Accessed September 24, 2024.

    |The study of hotels or inns.

    |

    xenology#(science fiction) The study of alien life.

    1. (genetics) Homology from horizontal gene transfer.
    xylologyThe study of wood.

    Z

    class="wikitable" style="width:100%;"
    -ology Word

    ! Description

    ! Synonyms

    ----Alternative spellings

    zooarcheology{{efn|name=fn3}}The study of animal remains at archeological sites.*archeozoology{{efn|name=fn3}}
    zoogeologyZoogeology, N.Oxford English Dictionary. Oxford University Press, September 2024.The study of fossil animal remains.
    zoologyThe scientific study of the behavior, structure, physiology, classification, and distribution of animals.*zoölogy
    zoonosologyZoonosology, N.Oxford English Dictionary. Oxford University Press, September 2024.The study of animal diseases.
    zoopathologyThe veterinary study specializing in the diagnosis of animal diseases through the examination of animal tissue and body fluids.*veterinary pathology
    zoophysiology{{Cite web |date=2024-07-05 |title=Zoophysiology |url=https://www.gu.se/en/biological-environmental-sciences/our-research/zoophysiology |access-date=2024-09-12 |website=University of Gothenburg |language=en}}The study of the physiology of animals.
    zoophytology{{Cite web |title=Definition of 'zoophytology' |url=https://www.collinsdictionary.com/us/dictionary/english/zoophytology |access-date=September 12, 2024 |website=Collins Dictionary |publisher=Collins English Dictionary}}The natural history of zoophytes.*zoöphytology
    zoopsychologyZoopsychology, N.Oxford English Dictionary. Oxford University Press, September 2024.The study of psychology in animals.
    zygologyZygology, N.Oxford English Dictionary. Oxford University Press, July 2023.A branch of technology dealing with joining and fastening.
    zymologyThe science of or knowledge concerning fermentation.*zumology
    zymotechnologyZymotechnology, N.Oxford English Dictionary. Oxford University Press, June 2024.The study of fermentation, especially yeast fermentation in beer-brewing.
    zythologyThe study of beer and beer-brewing.

    See also

    Notes

    {{notelist|refs=

    {{efn|name=fn1|The prefix paleo is used to denote something prehistoric, old, ancient, or primitive. The alternate spellings for it include: palaeo and palæo. All words which begin with the prefix paleo- can be alternatively spelt with palaeo- or palæo-.}}

    {{efn|name=fn2|Words that contain the American prefix or combining form hema- (or sometimes hemo) can be alternatively spelt with haema- or hæma, the British English version. In both cases, it means blood.}}

    {{efn|name=fn3|The prefix or combining form archeo means ancient. It can be alternately spelled archaeo or archæo. All words which contain archeo can be alternatively spelt with archaeo or archæo.}}

    }}

    References

    {{reflist|30em}}