# conic section

### 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.

## Words nearby conic section

congruous, congruous hemianopsia, congé, conic, conic projection, conic section, conical, conical cornea, conical papilla, conical pendulum, conicoid

## Origin of conic section

First recorded in 1655–65

Also called conic.

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

“Affect” vs. “Effect”: Use The Correct Word Every Time

Did You Know We Added These New Terms To Our Slang Dictionary?

Presidents’ Day Isn’t The Real Name Of The February Holiday

10 Archaic Yet Romantic Words For Valentine’s Day

“Breach” vs. “Breech”: Don’t Confuse The Two!

Empathy vs. Sympathy: Which Word To Use And When

## 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
© William Collins Sons & Co. Ltd. 1979, 1986 © 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 Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.