noun ry·an·o·dine \rīˈanəˌdēn, -də̇n\

Definition of ryanodine



  1. :  a crystalline insecticidal alkaloid C25H35NO9 that is toxic to mammals and is obtained from the root and stem of the ryania

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Origin and Etymology of ryanodine

irregular from New Latin Ryania (genus name of Ryania speciosa) + English -ine

First Known Use: 1948

Seen and Heard

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to criticize severely

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