optical disc

Noun
  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 (synset 103857307)
    is a type of: memory device, storage device - a device that preserves information for retrieval
    subtypes:
    • cd, compact disc, compact disk - a digitally encoded recording on an optical disk that is smaller than a phonograph record; played back by a laser
    • dvd, videodisc, videodisk - a digital recording (as of a movie) on an optical disk that can be played on a computer or a television set
    same as: optical disk

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