Editing CD (disambiguation) (section)

==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]]

===Mathematics===
* [[cd (elliptic function)]], one of Jacobi's elliptic functions

===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
* [[Photolithography#Resolution in projection systems|Critical Dimension]], the minimum feature size that a projection system can print in photolithography
* [[Drag coefficient]] or ''c<sub>d</sub>'', a dimensionless quantity used to quantify the drag of an object in a fluid
* [[Cluster decay]], a rare mode of nuclear decay