‖n. pl. [ NL., from L. pulmo, -onis, a lung. ] (Zool.) 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 Limnæa and Planorbis. [ 1913 Webster ]
a. [ L. pulmonarius, from pulmo, -onis, a lung; of uncertain origin, perh. named from its lightness, and akin to E. float: cf. F. pulmonaire. Cf. Pneumonia. ] Of or pertaining to the lungs; affecting the lungs; pulmonic. [ 1913 Webster ]
Pulmonary artery.
n. [ Cf. F. pulmonaire. See Pulmonary, a. ] (Bot.) Lungwort. Ainsworth. [ 1913 Webster ]