WordReference Random House Learner's Dictionary of American English © 2014
trig•o•nom•e•try /ˌtrɪgəˈnɑmɪtri/USA pronunciation
Mathematicsthe branch of mathematics that deals with the relations between the sides and angles of triangles:a course in trigonometry.
trig•o•no•met•ric /ˌtrɪgənəˈmɛtrɪk/USA pronunciation adj. See -meter-.
Collins Concise English Dictionary © HarperCollins Publishers::
trigonometry /ˌtrɪɡəˈnɒmɪtrɪ/ n
Etymology: 17th Century: from New Latin trigōnometria from Greek trigōnon triangletrigonometric /ˌtrɪɡənəˈmɛtrɪk/, ˌtrigonoˈmetrical adj
- the branch of mathematics concerned with the properties of trigonometric functions and their application to the determination of the angles and sides of triangles. Used in surveying, navigation, etc
'trigonometry' also found in these entries: