Definition of Cladocera in US English:

Cladocera

plural noun

Zoology
  • An order of minute branchiopod crustaceans which includes the water fleas. They typically have a transparent shell enclosing the trunk, and large antennae which are used for swimming.

    • ‘As a juvenile, Pomoxis nigromaculatus feeds mainly on microscopic prey such as Cyclops, Cladocera, and Daphnia.’
    • ‘In the chapter on the Cladocera, Smith does not address the much-discussed question of whether this Order really is a valid monophyletic group.’
    • ‘Salt-tolerant species within the chydorid Cladocera, as well as many freshwater Ostracoda and Chironomidae, push beyond this limit by means of hyper-osmotic regulation.’
    • ‘Osmoregulation in Cladocera has been comprehensively reviewed by Aladin and Potts.’
    • ‘Daphnia are freshwater crustaceans in the order Cladocera that are known to have four expansion segments in the 18S rRNA gene.’

Origin

Modern Latin (plural), from Greek klados ‘branch or root’ + keras ‘horn’ (because of the branched antennae).

Pronunciation

Cladocera

/kləˈdäsərə/