tangent

英 ['tæn(d)ʒ(ə)nt] 美['tændʒənt]

• adj. 切线的，相切的；接触的；离题的
• n. [数] 切线，[数] 正切
• n. (Tangent)人名；(瑞典)坦根特

1. a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point

2. ratio of the opposite to the adjacent side of a right-angled triangle