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water flea

noun

Definition of water flea

  1. :  any of various small active dark or brightly colored aquatic crustaceans (such as a daphnia or cyclops)

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First Known Use of water flea

1687

WATER FLEA Defined for Kids

water flea

noun

Definition of water flea for Students

  1. :  a tiny often brightly colored freshwater animal related to the crab and lobster

Learn More about water flea

  1. Britannica.com: Encyclopedia article about water flea

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