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[see-dee-rom] /ˈsiˌdiˈrɒm/
a compact disk on which a large amount of digitized read-only data can be stored.
Compare ROM.
Origin of CD-ROM
c(ompact) d(isk) r(ead-)o(nly) m(emory) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for CD-ROM


compact disc read-only memory; a compact disc used with a computer system as a read-only optical disk
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for CD-ROM

1983, in computer jargon; also cd-rom; from compact disc read-only memory.

Online Etymology Dictionary, © 2010 Douglas Harper
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CD-ROM in Science
A compact disk containing permanently stored data that cannot be altered.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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CD-ROM in Culture

CD-ROM definition

An acronym for compact disc-read only memory. Commonly known as CDs, these plastic discs hold information that can be read by laser. (Compare magnetic tape.)

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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