Trigonometry
Origin
From New Latin trigonometria, from Ancient Greek Ï„Ïίγωνον (trigÅnon, "triangle") + -metria ("-metry").
Noun
trigonometry
(countable and uncountable; plural trigonometrys)- (mathematics) The branch of mathematics that deals with the relationships between the sides and the angles of triangles and the calculations based on them, particularly the trigonometric functions.