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CD-ROM

[see-dee-rom]
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noun
  1. 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)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for cd-rom

CD-ROM

noun
  1. 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

Word Origin and History for cd-rom

CD-ROM

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

Online Etymology Dictionary, © 2010 Douglas Harper

cd-rom in Science

CD-ROM

[sēdē′rŏm]
  1. A compact disk containing permanently stored data that cannot be altered.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cd-rom in Culture

CD-ROM

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 Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.