‖n. pl. [ NL., fr. Gr. &unr_; unequal + &unr_; side. ] (Zool.) A primary division of gastropods, including those having spiral shells. The two sides of the body are unequally developed. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'a`rqron joint + &unr_; the side. ] (Zool.) The side or limb-bearing portion of an arthromere. [ 1913 Webster ]

‖ n. [ NL., fr. Gr. &unr_; within + &unr_; rib, side. See Pleura. ] (Bot.) The inner coating of a seed. See Tegmen. [ 1913 Webster ]

a. [ Pref. epi- + pleural. ] (Anat.) Arising from the pleurapophysis of a vertebra. Owen. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. e'y^ well + &unr_; double + &unr_; rib, &unr_;, pl., side. ] (Biol.) The fundamental forms of organic life, that are composed of two equal and symmetrical halves. Syd. Soc. Lex. [ 1913 Webster ]

‖n. pl. [ NL. See Iso-, and Pleura. ] (Zool.) A subclass of Gastropoda, in which the body is symmetrical, the right and left sides being equal. [ 1913 Webster ]

☞ The intestine terminates at the posterior end of the body, and the gills and circulatory and reproductive organs are paired. It includes the chitons (Polyplacophora), together with Neomenia and Chætoderma, which are wormlike forms without a shell. [ 1913 Webster ]

‖n.; pl. Parapleuræ [ NL. See Para-, and 2d Pleura. ] (Zool.) A chitinous piece between the metasternum and the pleuron of certain insects. [ 1913 Webster ]

‖n., pl. of Pleuron. [ 1913 Webster ]

n.; pl. L. Pleuræ E. Pleuras [ NL., n. fem., fr. Gr. &unr_; a rib, the side. ] 1. (Anat.) (a) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane. (b) The closed sac formed by the pleural membrane about each lung, or the fold of membrane connecting each lung with the body wall. [ 1913 Webster ]

2. (Zool.) Same as Pleuron. [ 1913 Webster ]

a. (Anat.) Of or pertaining to the pleura or pleuræ, or to the sides of the thorax. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; rib + &unr_; pain. ] (Med.) Pain in the side or region of the ribs. [ 1913 Webster ]

‖n.; pl. Pleurapophyses [ NL. See Pleura, and Apophysis. ] (Anat.) One of the ventral processes of a vertebra, or the dorsal element in each half of a hemal arch, forming, or corresponding to, a vertebral rib. -- Pleu*rap`o*phys"i*al a. Owen. [1913 Webster]

‖n. [ NL., fr. Gr. "ra`bdos a rod + &unr_;&unr_;&unr_;&unr_; the side.] (Zool.) A genus of marine Bryozoa in which the tubular cells have a centralchitinous axis and the tentacles are borne on a bilobed lophophore. It is the type of the order Pterobranchia, or Podostomata [1913 Webster]

a. (Anat.) Situated under the pleural membrane. [ 1913 Webster ]