Definition of CD-ROM noun from the Oxford Advanced American Dictionary

 

CD-ROM

 noun
noun
NAmE//ˌsi di ˈrɑm//
 
[countable, uncountable]
 
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the abbreviation forcompact disk read-only memory(a CD on which large amounts of information, sound, and pictures can be stored, for use on a computer) The software package contains 5 CD-ROMs. The encyclopedia is available on CD-ROM. a CD-ROM drive (= in a computer) compare ROM
See the Oxford Advanced Learner's Dictionary entry: CD-ROM