A bitter glycoside, C33H50O14, contained in the leaves of the buckbean, Menyanthes trifoliata.
Origin
Mid 19th century; earliest use found in George W. Francis (1800–1865), botanist. From scientific Latin Menyanthes, the name of the genus of plants including the buckbean (J. Pitton de Tournefort Inst. Rei Herbariae I. 117; see below) + -in.