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# conic section

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noun Geometry.

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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Also called conic.

## Origin of conic section

First recorded in 1655â€“65

## Words nearby conic section

conic, conical pendulum, conicoid, conic projection, conics, conic section, conidiophore, conidium, conifer, coniferin, coniferous

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, Â© Random House, Inc. 2023

## How to use conic section in a sentence

## British Dictionary definitions for conic section

conic section

noun

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 hyperbolaOften shortened to: conic

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Â© William Collins Sons & Co. Ltd. 1979, 1986 Â© HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for conic section

conic section

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.

The American HeritageÂ® Science Dictionary
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