OPTICAL DISC

Pronunciation (US): (GB):

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

Synonyms:

optical disc; optical disk

Classified under:

Nouns denoting man-made objects

Hypernyms ("optical disc" is a kind of...):

memory device; storage device (a device that preserves information for retrieval)

Hyponyms (each of the following is a kind of "optical disc"):

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)