pyrethrin

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noun py·re·thrin \pī-ˈrē-thrən, -ˈre-\

Definition of pyrethrin

  1. :  either of two oily liquid esters C21H28O3 and C22H28O5 having insecticidal properties and occurring especially in the flowers of pyrethrum

Origin and Etymology of pyrethrin

International Scientific Vocabulary, from Latin pyrethrum


First Known Use: 1882


Medical Dictionary

pyrethrin

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noun py·re·thrin \pī-ˈrē-thrən, -ˈreth-rən\

Medical Definition of pyrethrin

  1. :  either of two oily liquid esters C21H28O3 and C22H28O5 that have insecticidal properties and are the active components of pyrethrum


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