| Noun | 1. | subclass Copepoda - minute planktonic or parasitic crustaceans class Crustacea, Crustacea - class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas copepod, copepod crustacean - minute marine or freshwater crustaceans usually having six pairs of limbs on the thorax; some abundant in plankton and others parasitic on fish genus Cyclops - copepod water fleas Branchiura, order Branchiura - copepods with suctorial mouthparts; parasitic on fishes class - (biology) a taxonomic group containing one or more orders |