duckweed

duck·weed  (dkwd)

n.

Any of various small, free-floating, stemless aquatic flowering plants of the genus Lemna, growing in close, often carpetlike colonies on the surface of quiet water.

Thesaurus

Noun

1.

duckweed - any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds duckweed family, family Lemnaceae, Lemnaceae - family of small free-floating thalloid plants common duckweed, Lemna minor, lesser duckweed - of temperate regions except eastern Asia and Australia Lemna trisulca, star-duckweed - cosmopolitan in temperate regions except North America great duckweed, Spirodela polyrrhiza, water flaxseed - cosmopolitan except South America and New Zealand and some oceanic islands watermeal - any of various aquatic plants of the genus Wolffia; throughout warmer regions of the world bogmat, mud midget, Wolffiella gladiata - having narrow flat sickle-shaped submerged fronds; North America aquatic plant, hydrophyte, hydrophytic plant, water plant - a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth