Frogbit definition

A European plant, Hydrocharis morsus-ranae, with roundish leaves and small white flowers, that floats on still water and propagates itself by runners.
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An American plant, Limnobium spongia, with similar propagation.
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A South American plant, Limnobium laevigatum.
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Other Word Forms

Noun

Singular:
frogbit
Plural:
frogbits

Origin of frogbit