ROM ROM is the permanent part of a computer's memory. The information stored there can be read but not changed. ROM is an abbreviation for `read-only memory'. (COMPUTING) n-uncount →
CD-ROM
CD-ROM (CD-ROMs plural )A CD-ROM is a CD on which a very large amount of information can be stored and then read using a computer. CD-ROM is an abbreviation for `compact disc read-only memory'. (COMPUTING) n-count
The collected Austen novels on CD-ROM will cost £35.
CD-ROM drive (CD-ROM drives plural )A CD-ROM drive is the device that you use with a computer to play CD-ROMs. (COMPUTING) n-count