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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A small optical disk on which data such as music, text, or graphic images is digitally encoded.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A form of digital media on a plastic disc read by a laser in a CD drive. It comes in several varieties including CD-ROM, CD-R, and CD-RW.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser


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