Hypertext Webster Gateway: "coumarin"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Coumarin \Cou"ma*rin\ (k[=oo]"m[.a]*r[i^]n), n. [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.
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