pulmonate
Concise Oxford English Dictionary © 2008 Oxford University Press:
pulmonate /ˈpʌlməneɪt/
▶noun Zoology a mollusc of the group Pulmonata, which includes the land snails and slugs and many freshwater snails.
– origin from mod. L. Pulmonata, from L. pulmo, pulmon- ‘lung’.
'pulmonate' also found in these Oxford entries:

