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Noun: daphnia  daf-nee-u
  1. Minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae
    - water flea

Derived forms: daphnias

Type of: branchiopod, branchiopod crustacean, branchiopodan

Part of: genus Daphnia

Encyclopedia: Daphnia