Answer: laserdisc

AnswerCrossword Clue
LASERDISCBygone video format
LASERDISCDVD forerunner
LASERDISCBlu-ray's sizable ancestor
LASERDISC"The biggest innovation in television since television"
laserdiscA disk that resembles a compact disc and functions in a similar manner; an optical disc. It is used mainly for high-quality video and for interactive multimedia on computer
laserdisca disc similar to a long-playing record on which data is stored by the use of a laser also LASERDISK