conic section

American  

noun

Geometry.

1. a curve formed by the intersection of a plane with a right circular cone; an ellipse, a circle, a parabola, or a hyperbola.

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conic section British  

noun

1. Often shortened to: conic.  one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e , which is constant for a particular curve e = 0 for a circle; e <1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola

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conic section Scientific  

1. A curve formed by the intersection of a plane with a cone. Conic sections can appear as circles, ellipses, hyperbolas, or parabolas, depending on the angle of the intersecting plane relative to the cone's base.

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Etymology

Origin of conic section

First recorded in 1655–65

Example Sentences

See Examples For:

conic section

The way in which we slice the cone will determine the type of conic section formed at the intersection.

From Textbooks ● Feb. 13, 2015

Because the discriminant is invariant, observing it enables us to identify the conic section.

From Textbooks ● Feb. 13, 2015

For the following exercises, graph the given conic section.

From Textbooks ● Feb. 13, 2015

Explain how eccentricity determines which conic section is given.

From Textbooks ● Feb. 13, 2015

It will later appear that a point-row of the second order is a conic section.

From An Elementary Course in Synthetic Projective Geometry by Derrick Norman Lehmer