| NOUN | artifact | optical disc, optical disk | a disk coated with plastic that can store digital data as tiny pits etched in the surface |
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| Meaning | 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. | |
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| Synonym | optical disk | |
| Narrower | compact disk, compact disc, CD | A digitally encoded recording on an optical disk that is smaller than a phonograph record |
| videodisk, videodisc, DVD | A digital recording (as of a movie) on an optical disk that can be played on a computer or a television set | |
| Broader | memory device, storage device | A device that preserves information for retrieval |
| Spanish | disco óptico | |
| Catalan | disc òptic | |
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