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water flea

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noun
any of various small crustaceans that move about in the water like fleas, as those of the genus Daphnia.
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Origin of water flea

First recorded in 1575–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use water flea in a sentence

British Dictionary definitions for water flea

water flea

noun
any of numerous minute freshwater branchiopod crustaceans of the order Cladocera, which swim by means of hairy branched antennaeSee 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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