Pronunciation: (frogz'bit", frôgz'-), [key]
1. an aquatic, floating plant, Hydrocharis morsus-ranae, of Eurasia, having thick, roundish, spongy leaves.
2. an aquatic, floating plant, Limnobium spongia, of tropical America, having reddish-brown spotted, oblong, heart-shaped, or ovate leaves. Also,frogbit.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.