'Prosopulmonata' definitions:

Definition of 'Prosopulmonata'

From: GCIDE

Prosopulmonata \Pros`o*pul`mo*na"ta\, n. pl. [NL., fr. Gr. ? forward + L. pulmo a lung.] (Zool.) A division of pulmonate mollusks having the breathing organ situated on the neck, as in the common snail. [1913 Webster]