CD (disambiguation)

CD, or compact disc, is a thin plastic silvery disc for audio recordings.

CD or cd may also refer to:

Science and technology

Astronomy and cosmology

• Cordoba Durchmusterung, a star catalog of the southern sky
• Cosmological decade or CÐ, a unit of time
• Type-cD galaxy, a galaxy morphology classification

Biology, ecology, and medicine

• Coeliac disease, long term autoimmune disorder causing intolerance to gluten
• Conduct disorder, a psychological disorder
• Conservation Dependent or LR/cd, an IUCN category
• Cluster of differentiation, a protocol used for the identification of cell surface molecules on white blood cells
• Crohn's disease
• Chlordane
• Communicable disease

Computing

• CD-ROM, compact disc technology applied for use in computer data
• cd (command), a shell command to change the current working directory
• Continuous delivery, a software development design practice
• Continuous deployment, a software development design practice
• Collision detection, CSMA/CD
• .cd, the Internet domain of the Democratic Republic of the Congo
• Sega CD, also known as the Sega Mega-CD, a CD-ROM accessory and format for the Sega Genesis produced by Sega as part of the fourth generation of video game consoles

Mathematics

• cd (elliptic function), one of Jacobi's elliptic functions
• 400 (number), written CD in Roman numerals
  • AD 400 (CD), a year of the Common Era
• 205 (number), written CD in hexadecimal

Other uses in science and technology

• Cadmium, symbol Cd, a chemical element
• Candela or cd, a unit of light intensity
• -CD, the North American call sign suffix for Class A low-power television stations operating with digital signals
• Circular dichroism, a form of spectroscopy
• Critical Dimension, the minimum feature size that a projection system can print in photolithography
• Drag coefficient or c_d, a dimensionless quantity used to quantify the drag of an object in a fluid
• Cluster decay, a rare mode of nuclear decay

Government, military, and political

• Commander of the Order of Distinction, a rank in the Jamaican Orders of Societies of Honour
• Canadian Forces' Decoration, by post-nominal letters
• Centre Democrats (Denmark), a Danish former political party
• Centre Democrats (Netherlands), a former political party of the Netherlands
• Centro Democratico, a political party in Italy
• Christian democracy, a political ideology
• Citizen's dividend, proposed policy based upon the Georgist principle that the natural world is the common property of all people
• Civil defense, an effort to protect the citizens of a state from military attack and natural disasters
• Community of Democracies, an intergovernmental organization of democracies and democratizing countries
• Conference on Disarmament, an international forum that negotiates multilateral arms control and disarmament agreements
• Corps Diplomatique, the collective body of foreign diplomats accredited to a particular country or body
• FBI Counterintelligence Division, the United States Federal Bureau of Investigation's division responsible for investigating espionage

Places

• Central District, Seattle, a district in Seattle
• Democratic Republic of the Congo, by ISO 3166-1 alpha-2 country code
• cd., abbreviation for caddesi, street, in Turkish

Transport

• ČD, short for České dráhy (Template:Literal translation), the main train company in the Czech Republic
• Chandrapur railway station (Station code: CD), Maharashtra, India
• Corendon Dutch Airlines (IATA code)
• Geely CD, a coupe automobile made by Geely Automobile
• Bitter CD, a luxury hatchback coupé

Arts and entertainment

• C.D (Criminal or Devil), a 2024 Indian psychological thriller film
• "CD", a song by T2 (band)
• Sonic CD, a 1993 platform game developed and published by Sega for the Sega CD

Other uses

• cd, for cord (unit) of volume of wood
• Cairo Damascus or Damascus Document, a text found among the Dead Sea Scrolls
• Committee Draft, a status in the International Organization for Standardization
• Companion dog (title), a title offered to dogs by the American Kennel Club for dog obedience
• Cross-dressing, the act of wearing clothing associated with the opposite sex
• Cúcuta Deportivo, a Colombian football club
• Certificate of deposit, in the United States, a bank-issued financial instrument that matures on a fixed date but typically has higher interest than a savings account

See also

• Template:Srt
• CDS (disambiguation)
• CeeDee (disambiguation)
• C&D (disambiguation)
• BCD (disambiguation)
• CDE (disambiguation)

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