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water flea

noun
1.
any of various small crustaceans that move about in the water like fleas, as those of the genus Daphnia.
Origin
1575-1585
1575-85
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for water flea
  • Add the humble water flea, a freshwater relative of shrimp, to the list of creature with their genes mapped.
  • When a water flea or some other small creature swims past, it bends trigger hairs on the bladder, causing a flap to open.
  • Small animals such as the spiny water flea can travel unnoticed by hopping onto a kayak or other recreational equipment.
British Dictionary definitions for water flea

water flea

noun
1.
any of numerous minute freshwater branchiopod crustaceans of the order Cladocera, which swim by means of hairy branched antennae See also daphnia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Value for water

8
8
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