noun Date: 1664 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, 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
Meaning of CONIC SECTION in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012