circular function(n = noun.linkdef) trigonometric function - function of an angle expressed as a ratio of the length of the sides of right-angled triangle containing the angle;
is a kind of function, map, mapping, mathematical function, single-valued function
has particulars: sin, sine, arc sine, arcsin, arcsine, inverse sine, cos, cosine, arc cosine, arccos, arccosine, inverse cosine, tan, tangent, arc tangent, arctan, arctangent, inverse tangent, cotan, cotangent, arc cotangent, arccotangent, inverse cotangent, sec, secant, arc secant, arcsec, arcsecant, inverse secant, cosec, cosecant, arc cosecant, arccosecant, inverse cosecant

bodily function, characterisic function, circular, circular file, circular measure, circular plane, circular saw, control function, derived function, exponential function, function, function call, function word, inverse function, line function, localisation of function, localization of function, mathematical function, metric function, portable circular saw, sentential function, social function, threshold function, trigonometric function