# Definitions for **parabola**pəˈræb ə lə

### This page provides all possible meanings and translations of the word **parabola**

### Random House Webster's College Dictionary

pa•rab•o•lapəˈræb ə lə(n.)(pl.)-las.

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.

**Category:**Math**Ref:**See also diag. at conic section. art

#### Origin of **parabola**:

1570–80; < NL < Gk parabolḗ an application

### Princeton's WordNet

parabola(noun)

a plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve

### Wiktionary

parabola(Noun)

The conic section formed by the intersection of a cone with a plane parallel to a tangent plane to the cone; the locus of points equidistant from a fixed point (the focus) and line (the directrix).

parabola(Noun)

The explicit drawing of a parallel between two essentially dissimilar things, especially with a moral or didactic purpose. A parable.

**Origin:** From παραβολή, from παραβάλλω, from παρά + βάλλω.

### Webster Dictionary

Parabola(noun)

a kind of curve; one of the conic sections formed by the intersection of the surface of a cone with a plane parallel to one of its sides. It is a curve, any point of which is equally distant from a fixed point, called the focus, and a fixed straight line, called the directrix. See Focus

Parabola(noun)

one of a group of curves defined by the equation y = axn where n is a positive whole number or a positive fraction. For the cubical parabola n = 3; for the semicubical parabola n = /. See under Cubical, and Semicubical. The parabolas have infinite branches, but no rectilineal asymptotes

### Freebase

Parabola

A parabola is a two-dimensional, mirror-symmetrical curve, which is approximately U-shaped when oriented as shown in the diagram, but which can be in any orientation in its plane. It fits any of several superficially different mathematical descriptions which can all be proved to define curves of exactly the same shape. One description of a parabola involves a point and a line. The focus does not lie on the directrix. The locus of points in that plane that are equidistant from both the directrix and the focus is the parabola. Another description of a parabola is as a conic section, created from the intersection of a right circular conical surface and a plane, which is parallel to a straight line on the conical surface and perpendicular to another plane which includes both the axis of the cone and also the same straight line on its surface. A third description is algebraic. A parabola is a graph of a quadratic function, such as The line perpendicular to the directrix and passing through the focus is called the "axis of symmetry". The point on the axis of symmetry that intersects the parabola is called the "vertex", and it is the point where the curvature is greatest. The distance between the vertex and the focus, measured along the axis of symmetry, is the "focal length". The "latus rectum" is the chord of the parabola which is parallel to the directrix and passes through the focus. Parabolas can open up, down, left, right, or in some other arbitrary direction. Any parabola can be repositioned and rescaled to fit exactly on any other parabola — that is, all parabolas are geometrically similar.²

### The Nuttall Encyclopedia

Parabola

a conic section formed by the intersection of a cone by a plane parallel to one of its sides.

### The Standard Electrical Dictionary

Parabola

A curve; one of the conic sections. It is approximately represented by a small arc of a circle, but if extended becomes rapidly deeper than a half circle. If, from a point within called the focus, lines are drawn to the curve and then other lines are drawn from these points parallel to the axis, the angles of incidence will he equal to the angles of reflection as referred to tangents at the points where the lines touch the curve. [Transcriber's note; The general equation of a parabola is A*x^2 + B*x*y + C*y^2 + D*x + E*y + F = 0 such that B^2 = 4*A*C, all of the coefficients are real, and A and C are not zero. A parabola positioned at the origin and symmetrical on the y axis is simplified to y = a*x^2 ]

# Translations for **parabola**

### Kernerman English Multilingual Dictionary

satellite dish(noun)

a large circular antenna for receiving TV signals from a satellite.

- satellietskottelAfrikaans
- صَحْن يَلْتَقِط مِن قَمَر إصْطِناعيArabic
- сателитна чинияBulgarian
- antena parabólicaPortuguese (BR)
- satelitCzech
- die SatellitenschüßelGerman
- parabolDanish
- δορυφορική κεραίαGreek
- antena parabólicaSpanish
- satelliiditaldrikEstonian
- پخش ماهواره ايFarsi
- satelliittilautanenFinnish
- antenne paraboliqueFrench
- צַלָחָת לַוויָנִיתHebrew
- उपग्रह रकाबीHindi
- satelitska antenaCroatian
- parabolaantennaHungarian
- parabolaIndonesian
- parabola, antenna parabolicaItalian
- 衛星放送受信用パラボラアンテナJapanese
- 위성접시 안테나Korean
- palydovinė antenaLithuanian
- satelītantenas šķīvisLatvian
- piring satelitMalay
- schotelantenneDutch
- parabolantenneNorwegian
- antena satelitarnaPolish
- پخش ماهواره ايPersian
- دیشPashto
- спутниковая антенна, тарелкаRussian
- satelitná anténaSlovak
- satelitski krožnikSlovenian
- satelitska antenaSerbian
- parabolantennSwedish
- จานดาวเทียมThai
- çanak antenTurkish
- 碟形衛星信號接受器Chinese (Trad.)
- супутникова антена, “тарілка”Ukrainian
- سیارچہ کی مدد سے نشر کرنے والا قرصUrdu
- chảo vệ tinhVietnamese
- 圆盘式卫星电视天线Chinese (Simp.)

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"parabola." *Definitions.net.* STANDS4 LLC, 2014. Web. 20 Aug. 2014. <http://www.definitions.net/definition/parabola>.