bladderwort Syllabification: (blad·der·wort)Pronunciation: /ˈbladərˌwərt, -ˌwôrt/Definition of bladderwort noun an aquatic plant of north temperate regions with small air-filled bladders that keep the plant afloat and trap tiny animals that provide additional nutrients. Genus Utricularia, family Lentibulariaceae bladderwort in other Oxford dictionaries Definition of bladderwort in the British & World English dictionary