/ Dictionary / Index C CQ: Meaning and Definition of Find definitions for: CQ Pronunciation: [key] a signal sent at the beginning of radiograms conveying general information or sent by an amateur as an invitation for any other amateur to reply. charge of quarters. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. CPU c quark Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language