Also found in: Thesaurus, Encyclopedia, Wikipedia.
Related to daphnia: Daphnia pulex
n. pl. daphnia
Any of various water fleas of the genus Daphnia, having long branched antennae, some species of which are commonly used as food for aquarium fish.
[New Latin Daphnia, genus name, from Greek Daphnē, Daphne.]
(Animals) any water flea of the genus Daphnia, having a rounded body enclosed in a transparent shell and bearing branched swimming antennae
[C19: from New Latin, probably from Daphne]
daph•ni•a(ˈdæf ni ə)
n., pl. -ni•as.
any tiny freshwater branchiopod crustacean of the genus Daphnia, used as aquarium food.
Switch to new thesaurus
|Noun||1.||daphnia - minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae|
branchiopod, branchiopod crustacean, branchiopodan - aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding
genus Daphnia - water fleas