/ Dictionary / Index D Daphnia*: Meaning and Definition of Find definitions for: Daph•ni•a Pronunciation: (daf'nē-u), [key] — n. a genus of tiny, freshwater crustaceans having a transparent body, used in biological research and as food for tropical fish. Cf. water flea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Daphnephoria Daphnis Related Content Daily Word Quiz: hale Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language