Definition of trigonometry noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌtrɪɡəˈnɒmətri//
; NAmE NAmE//ˌtrɪɡəˈnɑːmətri//
[uncountable] Types of mathematics, Mathematical terminology
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the type of mathematics that deals with the relationship between the sides and angles of triangles Wordfinderalgebra, arithmetic, calculus, equation, geometry, logarithm, maths, numeracy, problem, trigonometry See related entries: Types of mathematics, Mathematical terminology Word Originearly 17th cent.: from modern Latin trigonometria (from trigon (via Latin from Greek trigōnon, neuter of trigōnos ‘three-cornered’) + -metry).
See the Oxford Advanced American Dictionary entry: trigonometry