Definitions for DVD
Random House Webster's College Dictionary
an optical disc that can store a very large amount of digital data, as text, music, or images.
Origin of dvd:
1990–95; orig. d(igital) v(ideo) d(isc); then d(igital) v(ersatile) d(isc); now an abbreviation only
videodisk, videodisc, DVD(noun)
a digital recording (as of a movie) on an optical disk that can be played on a computer or a television set
Kernerman English Learner's Dictionary
a disk for watching or recording movies or TV
An optical disc, typically one holding a commercially-recorded movie.
Digital Versatile Disc, the use of which is deprecated in favor of (2)
Digital Video Disc