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nectopod

American  
[nek-tuh-pod] / ˈnɛk təˌpɒd /

noun

  1. (in certain mollusks) an appendage modified for swimming.


Etymology

Origin of nectopod

First recorded in 1895–1900; from Greek nēktó(s) “swimming” (adjective), equivalent to nḗch(ein) “to swim” + -tos adjective suffix + -pod