- noun a way of storing over 17GB of data on a CD-ROM type disc.
- acronym fordigital videodisc
- Abbreviation of digital versatile disc or digital video disc, but DVD also serves as the proper name for such discs. A digital optical storage medium, usually 12 centimeters in diameter, whose contained information is encoded in microscopic pits on its metallic surface, which is protected by a plastic layer. Since there is no contact between the pickup and the recorded surface, wear is minimized, and the protective layer helps avoid reading errors due to dust or minor marks on the surface of the disc. To recover the recorded content, a laser is focused on the metallic surface of the disc, and the reflected light is modulated by the code on said disc. DVDs can be used to store any type of digitally encoded information, and are used especially for movies and/or computer multimedia content, and can hold up to 17 GB. DVD players can usually also play optical discs with other formats, such as CDs and Laserdiscs.
Information & Library Science
- noun an optical compact disc that can store a large quantity of video, audio or other information.
- noun a CD on which can be stored large amounts of data, most usually a compressed .mpeg file of a feature film. They have largely replaced video cassettes as the most popular format for watching (although not recording) films at home, as they are less prone to distortion and damage.
- abbreviationDigital Video Disk