A CD containing digital audio data according to the Red Book standard.

A kind of compact disc with a smaller physical diameter and lesser storage capacity.

Initialism of Compact Disc Digital Audio, the official name for the audio CD format.

A CD containing digital video data according to the White Book standard.

plural of CD-R

plural of CD-ROM

A device that holds multiple CDs allowing the user to play any of them.

A CD-ROM containing compressed audio tracks, often, but not always in the MP3 format.

plural of CD changer

A vehicle registration oval, containing the letters "CD" (for corps diplomatique), indicating that the owner is a foreign embassy and is immune from prosecution