conic section: Meaning and Definition of

con'ic sec'tion

Pronunciation: [key]
— Geom. Geom.
  1. a curve formed by the intersection of a plane with a right circular cone; an ellipse, a circle, a parabola, or a hyperbola. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.