any aquatic plant of the genus Utricularia, some of whose leaves are modified as small bladders to trap minute aquatic animals: family Lentibulariaceae
bladderwort in American English
(ˈblædərˌwɜrt)
noun
1.
any of a large genus (Utricularia) of chiefly aquatic plants of the bladderwort family, having finely divided leaves with bladders on them that trap small insects and crustaceans
adjective
2.
designating a family (Lentibulariaceae, order Scrophulariales) of dicotyledonous plants