cd

UK: /ˌsiːˈdiː/

Collins Concise English Dictionary © HarperCollins Publishers::

cd symbol

1. candela

WordReference Random House Learner's Dictionary of American English © 2025

CD,  an abbreviation of:

1. Business certificate of deposit.
2. Sound Reproduction compact disc.

WordReference Random House Unabridged Dictionary of American English © 2025

CD, 

1. Business See certificate of deposit. 
2. Government Civil Defense.
3. Community Development.
4. Sound Reproduction See compact disk. 

Cd, [Symbol, Chem.]

1. Chemistry cadmium.

cd, 

1. Optics candela;
   candelas.
2. Also, cd. cord;
   cords.

C/D, 

1. Business See certificate of deposit. 

Also, c/d 
C.D., 

1. Business See certificate of deposit. 
2. Government Civil Defense.
3. Government civil disobedience.
4. Government Congressional District.

c.d., 

1. Business cash discount.

Collins Concise English Dictionary © HarperCollins Publishers::

CD abbreviation

1. compact disc
2. Civil Defence (Corps)
3. Corps Diplomatique (Diplomatic Corps)
4. Conference on Disarmament: a United Nations standing conference, held in Geneva, to negotiate a global ban on chemical weapons

Collins Concise English Dictionary © HarperCollins Publishers::

Cd symbol:chemical

1. cadmium