optical disc
English Thesaurus
1. a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface (noun.artifact)
| hypernym | : | memory device, storage device, |
| definition | : | a device that preserves information for retrieval (noun.artifact) |
| hyponym | : | cd, compact disc, compact disk, |
| definition | : | a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser (noun.artifact) |
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