a fragrant crystalline substance, C9H6O2, 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cumarin
Historical Examples of cumarin
One ounce of cumarin is equal to four pounds of tonka beans.Creative Chemistry
Edwin E. Slosson
a white vanilla-scented crystalline ester, used in perfumes and flavourings and as an anticoagulant. Formula: C 9 H 6 O 2
Word Origin for coumarin
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
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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.