-one

{{Short description|Suffix used in organic chemistry}}

{{wiktionary}}

{{hatnote|For English pronouns formed with the suffix -one, see Indefinite pronoun.}}

The suffix -one is used in organic chemistry to form names of organic compounds containing the -C(=O)- group: see ketone.{{cite book |title=A guide to IUPAC nomenclature of organic compounds: recommendations 1993 |author=International Union of Pure and Applied Chemistry, Commission on Nomenclature of Organic Chemistry |editor=Panico R |editor2=Powell WH |editor3=Richer JC |location=Oxford |publisher=Blackwell Scientific Publications |year=1993 |isbn=0-632-03702-4}}

Sometimes a number between hyphens is inserted before it to state which atom the =O atom is attached to. This suffix was extracted from the word acetone. The final "-e" disappears if it is followed by another suffix that starts with a vowel.