[ daf-nee-uh ]
/ ˈdæf ni ə /


a genus of tiny, freshwater crustaceans having a transparent body, used in biological research and as food for tropical fish.
Compare water flea.

Origin of Daphnia

1840–50; < New Latin, perhaps after Daphne; see -ia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for daphnia


/ (ˈdæfnɪə) /


any water flea of the genus Daphnia, having a rounded body enclosed in a transparent shell and bearing branched swimming antennae

Word Origin for daphnia

C19: from New Latin, probably from Daphne
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