Definition of Pyrethrins. Meaning of Pyrethrins. Synonyms of Pyrethrins
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Definition of Pyrethrins
Pyrethrin Pyrethrin Pyr"eth*rin, n. [NL. Pyrethrum, generic name of
feverfew, Gr. ? feverfew.] (Chem.)
A substance resembling, and isomeric with, ordinary camphor,
and extracted from the essential oil of feverfew; -- called
also Pyrethrum camphor.