Dictionary
op'tical disk'
Computers, Television.
1. Also,op'tical disc'.Also called
laser disk. a grooveless disk on which digital data, as text, music, or pictures, is stored as tiny pits in the surface and is read or replayed by a laser beam scanning the surface.
2. videodisk. Cf.
compact disk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.