DVD-ROM

From Styleguide

DVD-ROM

Abbreviation for Digital Versatile Disc-Read Only Memory, a format used for encoding computer programs onto a DVD.

DVD-ROM acceptable on all references. DVD acceptable if context makes the format clear.

Example: The PlayStation 2 is capable of playing games on DVD-ROMs, as well as DVD movies. Many early PlayStation 2 games were available on CDs instead of DVDs.

Also see: CD-ROM.