cinerin

noun

cin·​er·​in

ˈsinərə̇n

plural -s

: either of two oily liquid esters C₂₀H₂₈O₃ and C₂₁H₂₈O₅ of cinerolone having high insecticidal properties and occurring in pyrethrum flowers and distinguished by the numerals I and II

Word History

Etymology

Latin ciner-, cinis ashes + English -in

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