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Webster 1913 Edition
Coumarin
Cou′ma-rin
(koō′mȧ-rĭn)
, Noun.
[F., fr.
coumarou
, a tree of Guiana.] (Chem.)
The concrete essence of the tonka bean, the fruit of
Dipterix (formerly Coumarouna) odorata
and consisting essentially of coumarin proper, which is a white crystalline substance, C9H6O2
, of vanilla-like odor, regarded as an anhydride of coumaric acid, and used in flavoring. Coumarin in also made artificially.