/ Dictionary / Index C circulating medium: Meaning and Definition of Find definitions for: cir'culating me"dium Pronunciation: [key] any coin or note passing, without endorsement, as a medium of exchange. such coins or notes collectively. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. circulating library circulation Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language