Function: noun
Date: 1664
1 : a plane curve, line, pair of intersecting lines, or point that is the intersection of or bounds the intersection of a plane and a cone with two nappes
2 : a curve generated by a point which always moves so that the ratio of its distance from a fixed point to its distance from a fixed line is constant
conic section 1: 1 straight lines, 2 circle, 3 ellipse, 4 parabola, 5 hyperbola