pyrethrin

pyrethrin Definition

py·reth·rin (pī ret̸h′rin, -rē′t̸hrin)

noun

either of two liquid esters, CHO or CHO, derived from chrysanthemums: the active ingredient of pyrethrum

Etymology: < pyrethrum + -in

pyrethrin Usage Examples

Adjective modifier

natural: Unfortunately, the natural pyrethrins are unstable in light; they are of limited use in agriculture due to their rapid breakdown.

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