cinerin
noun
cin·er·in
\ˈsinərə̇n\
Definition of cinerin
-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
From the M-W Editors
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Origin and Etymology of cinerin
Latin ciner-, cinis ashes + English -in
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