Umbelliferone \Um`bel*lif"er*one\, n. (Chem.)
A tasteless white crystalline substance, C9H6O3, found in
the bark of a certain plant (Daphne Mezereum), and also
obtained by the distillation of certain gums from the
Umbellifer[ae], as galbanum, asafetida, etc. It is
analogous to coumarin. Called also hydroxy-coumarin.
Source: Webster's Revised Unabridged Dictionary (1913)
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Umbelliferous \Um`bel*lif"er*ous\, a. [Umbel + -ferous: cf. F.
ombillif[`e]re.]
(Bot.)
(a) Producing umbels.
(b) Of or pertaining to a natural order (Umbellifer[ae]) of
plants, of which the parsley, carrot, parsnip, and fennel
are well-known examples.
Source: Webster's Revised Unabridged Dictionary (1913)
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