/ Dictionary / Index C cumarone: Meaning and Definition of Find definitions for: cu•ma•rone Pronunciation: (k'mu-rōn", ky'-), [key] — n. Chem. coumarone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cumarone (Thesaurus) cumarin cumber Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language