watermeal

English Thesaurus

1. any of various aquatic plants of the genus Wolffia; throughout warmer regions of the world (noun.plant)

hypernym	:	duckweed,
definition	:	any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds (noun.plant)

hyponym	:	common wolffia, wolffia columbiana,
definition	:	smallest flowering plants known; of the Americas (noun.plant)

member meronym	:	genus wolffia, wolffia,
definition	:	minute rootless aquatic herbs having globular fronds floating on or near the water surface and bearing one flower per frond (noun.plant)