2 definitions found From WordNet (r) 2.0 [wn]: Pulmonata noun: large order of gastropods usually breathing by means of a lung-like sac comprising most land snails and slugs and many freshwater snails [syn: {order Pulmonata}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Pulmonata \Pul'mo*na"ta\, noun pl. [NL., from L. pulmo, -onis, a lung.] (Zo["o]l.) An extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air-breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limn[ae]a and Planorbis.

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