/ Dictionary / Index C CRT: Meaning and Definition of Find definitions for: CRT Pronunciation: [key] cathode-ray tube. a computer terminal or monitor that includes a cathode ray tube. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: crt (Thesaurus) crs. cru Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language