pyrethrin Meaning, Definition & Usage

Pyr"eth*rin noun

Etymology

NL. Pyrethrum, generic name of feverfew, Gr. feverfew.

Definitions

1. (Chem.) A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor. a complex of several substances. Used as insecticides.