/ Dictionary / Index C coagency: Meaning and Definition of Find definitions for: co•a•gen•cy Pronunciation: (kō-ā'jun-sē), [key] — pl. -cies. joint agency. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coadventure coagent Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language