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 a parent compound in anticoagulant agents; also : a derivative of this compound
Recent Examples of coumarin from the Web
Both cassia cinnamon and Saigon cinnamon contain coumarin, a natural compound that can harm the liver when taken in large amounts.
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Origin and Etymology of coumarin
French coumarine, from coumarou tonka bean tree, from Spanish or Portuguese; Spanish cumarú, from Portuguese, from Tupi *kumarú, *kumbarú
First Known Use: 1830See Words from the same year
Medical 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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