# parabola

[ puh-rab-uh-luh ]
See synonyms for parabola on Thesaurus.com
nounGeometry.
1. a plane curve formed by the intersection of a right circular cone with a plane parallel to a generator of the cone; the set of points in a plane that are equidistant from a fixed line and a fixed point in the same plane or in a parallel plane. Equation: y2 = 2px or x2 = 2py.

## Origin of parabola

1
1570–80; <New Latin <Greek parabolḗ an application. See parable

## Words Nearby parabola

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

## How to use parabola in a sentence

• If the load travels the reverse way, the shearing force at the head of the train is given by the ordinates of the dotted parabola.

• This parabola is the curve of maximum moments for a travelling load uniform per ft. run.

• Now, except for very short bridges and very unequal loads, a parabola can be found which includes the curve of maximum moments.

• Let we be the load per ft. run which would produce the maximum moments represented by this parabola.

• The planet would then have moved in a parabola, or an hyperbola, curves not returning into themselves.

## British Dictionary definitions for parabola

parabola

/ (pəˈræbələ) /

noun
1. a conic section formed by the intersection of a cone by a plane parallel to its side. Standard equation: y ² = 4 ax, where 2 a is the distance between focus and directrix

## Origin of parabola

1
C16: via New Latin from Greek parabolē a setting alongside; see parable

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 parabola

parabola

[ pə-răbə-lə ]

1. The curve formed by the set of points in a plane that are all equally distant from both a given line (called the directrix) and a given point (called the focus) that is not on the line.

## Cultural definitions for parabola

parabola

[ (puh-rab-uh-luh) ]

A geometrical shape (see geometry) consisting of a single bend and two lines going off to an infinite distance.

## Notes for parabola

An object that is propelled away from the Earth and then drawn back by gravity, such as a fly ball in baseball, follows a path shaped like a parabola.