Definition of "lemna" [lemna]

• A genus of minute acquatic herbs floating on or below the water surface of still water consisting of a leaflike frond or plant body and single root. (noun)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "A sure sign that water is contaminated is "the parasitic plant known as the lemna gibba or green water lentil" -- it's a kind of duckweed -- "which grows in aquatic environments into which urban runoff is continually discharged."
• "These ducks feed on aquatic vegetation such as lemna and pondweed."
• "And tell her that it is called lemna, and that it may be found in any ditch or pool. ""