(computer hardware) An electronic device that plays compact discs.

compact disk - read only memory: an optical disc containing data that can be read (but not changed) by a computer

Initialism of Compact Disk - Read Writable. A form of digital media that is based on the use of a laser to read from a plastic disc. It can be written to multiple times.

Compact disc - recordable; a form of digital media that is based on the use of a laser to read from and write to a plastic disc. It can only be written to once, although the entire disc does not necessarily have to be written in one session.

A device for recording audio, or saving data, onto a compact disc.

A contention protocol for computers to send messages over the segment of an Ethernet network.

plural of recovery CD

A CD-ROM distributed with a computer and containing copies of the software originally installed on the computer's hard drive, allowing the end user to restore the system to its factory state.

plural of CD burner

(computing) A storage medium, often a compact disc, that contains a complete operating system that can be booted off the medium without having to install it.