plural noun
Pneu·​mo·​branchia | \ ˌn(y)üməˈbraŋkēə\
variants: or Pneumobranchiata \ -​ˌbraŋkēˈätə , -​ätə \

Definition of Pneumobranchia

in former classifications
: a group of terrestrial snails (suborder Rhipidoglossa) comprising those (as members of the genus Helicina) in which the gills are replaced by a respiratory sac

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History and Etymology for Pneumobranchia

New Latin, from pneum- + -branchia or branchiata

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