variants or frog's-bit
plural frogbits or frog's-bits
: a European aquatic floating herb (Hydrocharis morsus-ranae) with roundish heart-shaped leaves and small white flowers
: an American aquatic plant (Limnobium spongia) with round-cordate or reniform leaves and sessile or short-stalked spathes

Word History

First Known Use

1578, in the meaning defined at sense 1

Time Traveler
The first known use of frogbit was in 1578

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Dictionary Entries Near frogbit

Cite this Entry

“Frogbit.” Dictionary, Merriam-Webster, Accessed 1 Mar. 2024.

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