|trig 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|
|[C17: from New Latin trigōnometria from Greek trigōnon triangle]|
|trigonometry (trĭg'ə-nŏm'ĭ-trē) Pronunciation Key
The study of the properties and uses of trigonometric functions.