Definition of frogbit
1 : a European aquatic floating herb (Hydrocharis morsus-ranae) with roundish heart-shaped leaves and small white flowers
2 : an American aquatic plant (Limnobium spongia) with round-cordate or reniform leaves and sessile or short-stalked spathes
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Join MWU now and get access to America’s largest dictionary, with:
- 300,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
First Known Use of frogbit
Seen and Heard
What made you want to look up frogbit? Please tell us where you read or heard it (including the quote, if possible).