1. [ noun ] (zoology) minute free-swimming freshwater copepod having a large median eye and pear-shaped body and long antennae used in swimming; important in some food chains and as intermediate hosts of parasitic worms that affect man e.g. Guinea worms
Synonyms: cyclops
Related terms: copepod genus_Cyclops
2. [ noun ] (zoology) minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae
Synonyms: daphnia
Related terms: branchiopod_crustacean genus_Daphnia
Similar spelling:   water_vole