/ Dictionary / Index C coumarone: Meaning and Definition of Find definitions for: cou•ma•rone Pronunciation: (k'mu-rōn"), [key] — n. Chem. a colorless liquid, CHO, derived from a naphtha distilled from coal tar: used chiefly in the synthesis of coumarone resins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: coumarone (Thesaurus) coumarin coumarone resin Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language