plural noun
Cir·​ri·​pe·​dia | \ˌsirəˈpēdēə\

Definition of Cirripedia 

: a subclass of Crustacea comprising the barnacles, goose barnacles, and a few highly modified parasitic related forms, all being free-swimming in the larval stages but permanently attached or parasitic as adults

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Other Words from Cirripedia

cirripedial \ ¦⸗⸗¦⸗dēəl \ adjective

History and Etymology for Cirripedia

New Latin, from cirr- + -pedia footed ones (from Latin ped-, pes foot)

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