goniometry /gon′ē·om″ətrē/ [Gk, gonia, angle, metron, measure] , 1. a system for measuring angles of a joint. 2. a system for measuring angles during testing for various labyrinthine diseases that affect the sense of balance. One test uses a plank, one end of which may be raised to any desired height. The patient stands on the plank as one end is gradually raised, and the point at which he or she can no longer maintain balance is noted. −goniometric, adj.
