Pterocarpus (ter-o-kar'pus)

A genus of plants, pterocarpi lignum. See Santalum rubrum. P. marsupium. East Indian kino tree. It furnishes the best medicinal kino [Br. Ph.]. P. santalin us. Red sandal (or saunders) wood; a species closely related to P. marsupium, indigenous to southern India and the Philippines. blood, and the It yields a sort of astringent red dragon's sandal wood. fruit.] [Gr., pteron, a wing, -fkarpos„ pterygium (te-rij'e-um). i. One of the alae nas i. 2. A triangular patch of thickened conjunctiva the apex of which encroaches on the cornea; generally occupying the palpebral fi ure and most frequently growing from the nasal side into the cornea, between the epithelium and the subs tanti a propria, p. carnosum. A thick, vascular, muscle like p. (2d def.); developed from a p. tenue by inflammation, or forming the initial stage of a p. tenue. p. of the neck. A congenital malformation of the skin of the neck consisting of a prominent winglike fold that may extend from the mastoid proce to the acromion, p. tenue. A thin grayish p. (2d def.). p. unguis. A prolongation of the epidermis over the nail, covering the lunula. [Gr., pterygion, dim. of pteryx, a wing.]