ˈwu̇lfēə, ˈvȯl- noun
Usage: capitalized
Etymology: New Latin, from Johann F. Wolff died 1806 German physician and botanist + New Latin -ia
: a genus of widely distributed floating aquatic plants (family Lemnaceae) that are the smallest flowering plants known, consist merely of a minute ovoid or globose leafless thallus producing the flowers from clefts or grooves, and are distinguished from members of the genus Lemna by the one-celled anthers and by the absence of roots