noun
of temperate regions except eastern Asia and Australia
• Syn: ↑common duckweed, ↑Lemna minor
• Hypernyms: ↑duckweed
• Member Holonyms: ↑Lemna, ↑genus Lemna
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noun : an Old World duckweed (Lemna minor) that is widely naturalized in No. America
Useful english dictionary. 2012.