vid·eo·disc noun \ˈvi-dē-ō-ˌdisk\
: a disk on which movies, television programs, etc., are recorded in order to be watched on a computer or television screen
: a disc similar in appearance and use to a phonograph record on which programs have been recorded for playback on a television set; also : optical disk
: a recording (as of a movie) on a videodisc
First Known Use of VIDEODISC
videodisc noun (Concise Encyclopedia)
Rigid circular plate of either metal or plastic used to record video and audio signals for playback. It resembles a phonograph record and can be played on a machine attached to a conventional television receiver. There are two major classes of videodiscs, magnetic and nonmagnetic. Magnetic videodiscs have an oxide-coated surface onto which input signals are recorded as magnetic patterns in spiral tracks. Nonmagnetic videodiscs use either a mechanical recording system analogous to that used in phonograph records, or optical technology that uses a laser to read data coded as a sequence of pits on the disc. The most common type of videodisc today is the DVD.
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