A compact disk designed to store large amounts of data, especially high-resolution audio-visual material.
A high-density optical disc for storing large amounts of data, especially high-resolution audio-visual material.
A digital disk on which images, sounds, or data may be recorded for reproduction by a player connected as to a TV, stereo, or computer; specif., such a disk on which a film is commercially recorded.
The standard-definition (SD) optical disc format. Introduced in the U.S. in 1997 and developed by the computer and movie industries, the disc has the same 120mm/4.75" diameter as a CD but holds 4.7GB rather than 700MB. Whereas CDs use only one side, DVDs can be recorded on both sides as well as in dual layers. DVDs have 480 lines of resolution in the U.S. (NTSC) and 576 lines elsewhere (PAL). For high-definition (HD) optical discs with 1,080 lines of resolution, see Blu-ray.DVD first stood for "digital videodisc;" then "digital versatile disc" and finally just "D-V-D." In practice, DVD refers to all the following DVD formats. Modern DVD drives read and write all CD and DVD formats, except for DVD-RAM, which requires its own drive. For DVD speed ratings (1x, 2x, etc.), see DVD drives. See CSS, DVD region codes and optical disc.DVD-Video - SD MoviesDVD-Video is the movie format, which uses MPEG-2 compression to provide approximately two hours of video per side at 480i resolution. Blu-ray players also play DVD movies. See DVD-Video, DTV and Blu-ray.DVD-ROM - Read-Only DataDVD-ROMs hold data permanently, and like CD-ROMs, they are pressed at the factory. See DVD-ROM.DVD-R/DVD+R - Recordable (burnable)DVD-R and DVD+R are competing write-once formats for burning movies or data. They function like high-capacity CD-R discs. DVD-R DL and DVD+R DL are dual layer discs with twice the capacity. See DVD-R and DVD+R.DVD-RW/DVD+RW - RewritableDVD-RW and DVD+RW are competing formats that can be rewritten 1,000 times. Aimed at the consumer, 1,000 rewrites are considered adequate. See DVD-RW and DVD+RW.DVD-RAM - RewritableA DVD-RAM functions like a removable hard disk with a similar file structure. Although DVD-RAMs can be rewritten 100,000 times before they are no longer usable, they are not a popular medium. See DVD-RAM.DVD-Audio - High-Quality MusicDVD-Audio was designed to supersede the music CD, but like its SACD counterpart, never caught on. However, downloable music is available at the same sampling rates as DVD-Audio. See DVD-Audio and high-resolution audio.Plus and Minus: +R, +RW, -R, -RWThe formats endorsed by the DVD Forum have a hyphen in their names and are verbalized as "DVD Minus" or "DVD Dash." The competing formats from the DVD+RW Alliance use a plus sign. Starting in 2002, drives supporting both formats were introduced. See DVD Forum and DVD+RW Alliance.For drive specifications (2x, 4x, 8x, etc.), see DVD drives. For DVD storage specifications, see DVD storage capacities.
The definition of a DVD, which stands for digital video disc, is an optical disc that can store large quantities of digital material such as sound, images and data.
An example of a DVD is the disc that contains prerecorded movies that people watch in their homes.
Origin of dvd
- d(igital) v(ideo)d(isc) d(igital) v(ersatile) d(isc)
From American Heritage Dictionary of the English Language, 5th Edition