1. [syn: compact disk, compact disc, CD]
The Collaborative International Dictionary of English v.0.48:
compact disc \com"pact disc`\, compact disk \com"pact
disk`\(k[o^]m"p[a^]kt d[i^]sk`), n.
a disk-shaped optical data storage medium approximately 4-3/4
in. in diameter, which stores binary data as microscopic
nonreflective holes or pits in an otherwise reflective
surface, and is recorded and played back by rotation in an
electronic device containing a laser. It is often referred to
by its abbreviation CD. It is a type of optical data storage
medium. Compact disks are used for recordings of music as
well as of data for computer applications.
[WordNet 1.5 +PJC]
WordNet (r) 3.0 (2006):
n 1: a digitally encoded recording on an optical disk that is
smaller than a phonograph record; played back by a laser
[syn: compact disk, compact disc, CD]
The Free On-line Dictionary of Computing (30 December 2018):
(CD) (Not "disk", this spelling is part of the
A 4.72 inch disc developed by Sony and Philips that can
store, on the same disc, still and/or moving images in
monochrome and/or color; stereo or two separate sound tracks
integrated with and/or separate from the images; and digital
program and information files.
The same fabrication process is used to make both audio CDs
and CD-ROMs for storing computer data, the only difference
is in the device used to read the CD (the player or drive).
CD Information Center