noun Etymology: New Latin trigonometria, from Greek trigōnon + -metria -metry Date: 1614 the study of the properties of triangles and trigonometric functions and of their applications
TRIGONOMETRY
Meaning of TRIGONOMETRY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012