water lettuce
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noun
a floating aquatic plant, Pistia stratiotes, of the arum family, having a rosette of thick, spongy leaves.
Nearby words
water jacket, water jump, water key, water leaf, water lemon, water lettuce, water level, water lily, water lily family, water lily tulip, water line
Origin of water lettuce
First recorded in 1865–70
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for water lettuce
Like the lake, it has great patches of water-lettuce, which in some places almost bridge the channel.
This is principally formed of the water-lettuce, or Pistia, an aquatic plant with long roots which descend to the bottom.