DVD

very high-capacity digital optical disk (Computers)

very high-capacity digital optical disk (originally the DVD, like CD, was marketed for entertainment and later for computer users); device on which such disks can be played

DVD (also known as "Digital Versatile Disc" and "Digital Video Disc") is a popular optical disc storage media format used for data storage. Its main uses are for movies, software, and data archiving. Most DVDs are of the same dimensions as compact discs (CDs) but store more than 6 times the data.The term DVD is used in describing three ways that data is stored on the disks — DVD-ROM has data which can only be read and not written,  DVD-R can be written once and then functions as a DVD-ROM, and DVD-RAM holds data that can be re-written multiple times. DVD-Video and DVD-Audio discs respectively refer to properly formatted and structured video and audio content. Everything else, including other types of DVD discs with video content, is referred to as a DVD-Data disc. DVD is also used generically to refer to HD (High Density) video disc formats Blu-ray and HD DVD.
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DVD±R (also DVD+/-R, "DVD plus/dash R", or "DVD plus/minus R") is not a separate DVD format, but rather is a shorthand term for a DVD drive that can accept both of the common recordable DVD formats. Likewise, DVD±RW (also written as DVD±R/W, DVD±R/RW, DVD±R/±RW, DVD+/-RW, and other arbitrary ways) handles both common rewritable disc types (but not usually DVD-RAM).  [1]
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DVD, n the acronym for digital versatile disk or digital video disk. A high-density compact disk for storing large amounts of data, especially [more]DVD - Community and Resources

Noun
1. a digital videodisc; a recording (as of a movie) on an optical disk that can be played on a computer or a television set
(synonym) videodisk, videodisc
(hypernym) optical disk, optical disc

DVD, very high-capacity digital optical disk (Computers)