Definition – What does DVD mean?
DVD (digital video disc or digital versatile disc) is digital optical disc storage that stores any kind of digital data and is mostly used for software and other computer files as well as video programs watched using DVD players. It delivers greater storage capacity than compact discs while having same dimensions. The original DVD-Video format was standardized in 1995 by a consortium of electronics companies such as Sony, Philips, and Toshiba etc.
Glossary Web explains DVD
DVDs are used in DVD-Video consumer digital video format and in DVD-Audio consumer digital audio as well as for authoring DVD discs written in a special AVCHD format to hold high definition material. It also contains other types of information that may refer to as DVD data discs. A Standard DVD can hold 4.7 GB of data, but a variation of the original DVD format has a greater capacity such as dual-layer DVD can store 8.5 GB of data. The large capacity formats are not supported by most of the standalone DVD players, but they can be used with lots of computer-based DVD drives.