/ Dictionary / Index C circulating library: Meaning and Definition of Find definitions for: cir'culating li'brary Pronunciation: [key] a library whose books can be borrowed by its members or subscribers. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. circulating decimal circulating medium 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