# x-axis

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## x-ax·is

(ĕks′ăk′sĭs)*n.*

*pl.*

**x-ax·es**(-ăk′sēz)

**1.**The horizontal axis of a two-dimensional Cartesian coordinate system.

**2.**One of three axes in a three-dimensional Cartesian coordinate system.

## *x-*axis

*n*

(Mathematics) a reference axis, usually horizontal, of a graph or two- or three-dimensional Cartesian coordinate system along which the

*x-*coordinate is measured## x-ax•is

(ˈɛksˌæk sɪs)*n.,*

*pl.*

**x-ax•es**(ˈɛksˌæk siz)

**1.**(in a plane Cartesian coordinate system) the axis, usu. horizontal, along which the abscissa is measured and from which the ordinate is measured.

**2.**(in a three-dimensional Cartesian coordinate system) the axis along which values of

*x*are measured and at which both

*y*and

*z*equal zero.

[1925–30]

## x-ax·is

(ĕks′ăk′sĭs)**1.**The horizontal axis of a two-dimensional Cartesian coordinate system.

**2.**One of the three axes of a three-dimensional Cartesian coordinate system.

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Noun | 1. | x-axis - the horizontal axis in a plane coordinate systemcoordinate axis - one of the fixed reference lines of a coordinate system |

Translations

## x-axis

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