CD-ROM
From Styleguide
CD-ROM
Abbreviation for Compact Disc-Read Only Memory, a format used for encoding computer programs and videogames onto CD.
CD-ROM acceptable on all references. CD acceptable if context makes the specific format clear.
Example: Many early PlayStation 2 games were available on CD-ROM instead of the now-standard DVD format. The PlayStation plays games stored on CDs. The PlayStation can play music CDs as well as CD-ROM software.
