a. [ Gr. &unr_; a perpendicular line. See Cathetus. ] (Math.) Making a right angle; perpendicular, as two lines or two sides of a triangle, which include a right angle. [ 1913 Webster ]
n. [ L., fr. Gr.
Theta function (Math.),
‖n. pl. [ NL., fr. E. type + Gr. &unr_; to put, set. ] Printers; -- used in the name of an association of the master printers of the United States and Canada, called The United Typothetae of America. [ 1913 Webster ]