conic section

noun

Definition of conic section 

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

Illustration of conic section

Illustration of conic section

conic section 1: 1 straight lines, 2 circle, 3 ellipse, 4 parabola, 5 hyperbola

First Known Use of conic section

1664, in the meaning defined at sense 1

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The first known use of conic section was in 1664

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