W:CCD

• Charge-coupled device, an electronic light sensor used in various devices including digital cameras
• .ccd, the filename extension for CloneCD's CD image file

• Carbonate compensation depth, a property of oceans
• Colony collapse disorder, a phenomenon involving the abrupt disappearance of honey bees in a beehive or Western honey bee colony
• centicandela (ccd), an SI unit of luminous intensity denoting one hundredth of a candela
• Central composite design, an experimental design in response surface methodology for building a second order model for a response variable without a complete three-level factorial

• Complementary cumulative distribution function
• Continuous collision detection, especially in rigid-body dynamics
• Countercurrent distribution, used for separating mixtures
• Core complex die, an element of AMD Zen 2 and later microprocessor architectures

• Canine compulsive disorder, a behavioral condition in dogs, similar to human obsessive-compulsive disorder (OCD)
• Caput-collum-diaphyseal angle, the angle between the neck and the shaft of the femur in the hip
• Cleidocranial dysostosis (also called cleidocranial dysplasia), a genetic abnormality in humans
• Central core disease, a rare neuromuscular disorder
• Congenital chloride diarrhea, a rare disorder in babies
• Continuity of Care Document, an XML-based markup standard for patient medical document exchange
• Cross-reactive carbohydrate determinants, protein-linked carbohydrate structures that have a role in the phenomenon of cross-reactivity in allergic patients
• Cortical collecting duct, a segment of the kidney

• Census county division, a term used by the US Census Bureau
• Center City District, an economic development agency for the Center City area of Philadelphia
• Consular Consolidated Database, a database used for visa processing by the Bureau of Consular Affairs, US Department of State

• Confraternity of Christian Doctrine, a religious instruction program of the Catholic Church

• Café Coffee Day, a chain of coffee shops in India
• Country Club of Detroit
• Centre of Cricket Development, a cricket team; see Namibia Cricket Board
• Cricket Club of Dhakuria; see Gopal Bose

• Community College of Denver, a public college in Denver, Colorado
• Cincinnati Country Day School, a non-parochial, private school in Indian Hill, Ohio

• Christian Care Foundation for Children with Disabilities, in Thailand
• Council for a Community of Democracies, in the US
• Canadian Coalition for Democracies, a former advocacy organization in Canada

• Centro Cristiano Democratico (Christian Democratic Centre), a defunct Italian political party

• Convention Centre Dublin, Ireland

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