Noun

• S: (n) tangent (a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point)
• S: (n) tangent, tan (ratio of the opposite to the adjacent side of a right-angled triangle)
• direct hypernym / inherited hypernym / sister term
• S: (n) trigonometric function, circular function (function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle)
• S: (n) function, mathematical function, single-valued function, map, mapping ((mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function))
• S: (n) mathematical relation (a relation between mathematical expressions (such as equality or inequality))
• S: (n) relation (an abstraction belonging to or characteristic of two entities or parts together)
• S: (n) abstraction, abstract entity (a general concept formed by extracting common features from specific examples)
• S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
• derivationally related form