| NOUN | artifact | compact disc, compact disk, CD | a digitally encoded recording on an optical disk that is smaller than a phonograph record |
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| Meaning | A digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser. | |
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| Synonyms | compact disk, CD | |
| Narrower | CD-R, compact disc recordable, CD-WO, compact disc write-once | A compact disc on which you can write only once and thereafter is read-only memory |
| CD-ROM, compact disc read-only memory | A compact disk that is used with a computer (rather than with an audio system) | |
| audio CD, audio compact disc | compact discs used to reproduce sound (voice and music) | |
| Broader | optical disk, optical disc | A disk coated with plastic that can store digital data as tiny pits etched in the surface |
| recording | A storage device on which information (sounds or images) have been recorded | |