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Definition of trigonometry noun from the Oxford Advanced American Dictionary

 

trigonometry

 noun
noun
NAmE//ˌtrɪɡəˈnɑmətri//
 
(informal trig
NAmE//trɪɡ//
 
)
[uncountable]
 
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the type of mathematics that deals with the relationship between the sides and angles of triangles
trigonometric
 
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NAmE//ˌtrɪɡənəˈmɛtrɪk//
 
(also trigonometrical
NAmE//ˌtrɪɡənəˈmɛtrɪkl//
 
)
adjective
See the Oxford Advanced Learner's Dictionary entry: trigonometry