/ Dictionary / Index W warfarin: Meaning and Definition of Find definitions for: war•fa•rin Pronunciation: (wôr'fu-rin), [key] — n. Chem. a colorless, crystalline, water-insoluble anticoagulant, CHO, used chiefly as a rodenticide. a preparation of this used in the management of potential or existing clotting disorders. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: warfarin (Thesaurus) warfare Warfield Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language