retrorsine

noun

re·​tror·​sine

rə̇‧ˈtrȯrˌsēn,

-sə̇n

plural -s

: a poisonous crystalline alkaloid C₁₈H₂₅NO₆ found in various plants of the genus Senecio (as S. retrorsus)

Word History

Etymology

New Latin retrorsus (specific epithet of Senecio retrorsus) (from Latin, bent backwards) + English -ine

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