| Noun | 1. | subclass Cirripedia - barnacles class Crustacea, Crustacea - class of mandibulate arthropods including: lobsters; crabs; shrimps; woodlice; barnacles; decapods; water fleas barnacle, cirriped, cirripede - marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged surfaces Balanidae, family Balanidae - stalkless barnacles family Lepadidae, Lepadidae - goose barnacles class - (biology) a taxonomic group containing one or more orders |