coumarin


cou·ma·rin

noun \ˈkü-mə-rən\

Definition of COUMARIN

: a toxic white crystalline lactone C9H6O2 with an odor of new-mown hay found in plants or made synthetically and used especially in perfumery and as the parent compound in various anticoagulant agents (as warfarin); also : a derivative of this compound

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