ry·​a·​nia | \ rīˈānēə \
plural -s

Definition of ryania

1 : an insecticide made of a mixture of alkaloids from the ground stems of a tropical South American shrub (Patrisia pyrifera synonym Ryania speciosa) and used especially against the European corn borer
2 : the plant that yields ryania

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History and Etymology for ryania

New Latin Ryania (genus name of Ryania speciosa, the shrub from which it is made), from John Ryan, 18th century British physician + New Latin -ia

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Cite this Entry

“Ryania.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/ryania. Accessed 7 December 2019.

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