- 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. 2018
Examples from the Web for coumarin
Coumarin, an extract from tonka beans, may be used in making the extract.
Coumarin, a white crystalline product found in Tonka beans, and prepared synthetically from salicylic acid.The Handbook of Soap Manufacture
W. H. Simmons
If coumarin is present, a brown, precipitate will form, and if stirred with a rod it will collect in dark green flecks.
Good hay should come out green and with the odour of coumarin—to which is due the scent of new-mown hay.
These researches incidentally solved the constitution of coumarin, the odoriferous principle of woodruff.
- a white vanilla-scented crystalline ester, used in perfumes and flavourings and as an anticoagulant. Formula: C 9 H 6 O 2
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.
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