TRAPEZIUM

(Lat.), n. n. Tra2p(tra3p)-ez(e2z)'i2-u3m(u4m). From rpawe^a, a table. Fr., trapeze, corps rhomboidal (ou rhomboids, ou trapezo'ide) [2d def.]. Ger., Trapez, Trapezbein (1st def.), vielwinkeliger Knochendstdet.), gro es vieleckiges Bein (1st def.), trapezoider Korper (2d def.). 1. The outermost of the second row of the carpal bones. It is irregularly six-sided and grooved on its anterior surface for the tendon of the flexor carpi radial is, and articulates with the scaphoid, the trapezoid, and the first and second metacarpal bones. [L, 37, 142, 332.] 2. A tract of nerve-fibres at the lower part of the pons Varolii below the prolongations of the anterior pyramids. It comes below the superior olivary nucleus and extends upward to be continuous with the middle cerebellar peduncle. [I, 15 (K).] T. minus. See Trapezoid BONE. T. pont is. See T. (2d def.). [s. 641]