trigonometric function tri·go·no·metricfunction uncommon noun 1. function of an angle expressed as a ratio of the sides of right-angled triangle containing the angle Synonymstrigonometric functioncircular function Related words Broader terms function Narrower terms sinecosinetangentcotangentsecantcosecant WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
