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[koo-muh-rin] /ˈku mə rɪn/
noun, Chemistry.


or cumarin

[koo-muh-rin] /ˈku mə rɪn/
a fragrant crystalline substance, C 9 H 6 O 2 , obtained from the tonka bean, sweet clover, and certain other plants or prepared synthetically, used chiefly in soaps and perfumery.
Origin of coumarin
1820-30; < French coumarine, equivalent to coumar(ou) tonka-bean tree (< Spanish cumarú < Portuguese < Tupi cumaru) + -ine -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for cumarin
Historical Examples
  • One ounce of cumarin is equal to four pounds of tonka beans.

    Creative Chemistry

    Edwin E. Slosson
British Dictionary definitions for cumarin


a white vanilla-scented crystalline ester, used in perfumes and flavourings and as an anticoagulant. Formula: C9H6O2
Derived Forms
coumaric, cumaric, adjective
Word Origin
C19: from French coumarine, from coumarou tonka-bean tree, from Spanish cumarú, from Tupi
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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cumarin in Science
A fragrant crystalline compound extracted from several plants, such as tonka beans and sweet clover, or produced synthetically. Coumarin and its derivatives are widely used in perfumes, as anticoagulants, and as rodenticides. Chemical formula: C9H6O2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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