# z-axis

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## z-ax·is

(zē′ăk′sĭs)*n.*

*pl.*

**z-ax·es**(zē′ăk′sēz)

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

## *z-*axis

*n*

(Mathematics) a reference axis of a three-dimensional Cartesian coordinate system along which the

*z-*coordinate is measured## z-ax•is

(ˈziˌæk sɪs)*n.,*

*pl.*

**z-ax•es**(ˈziˌæk siz)

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

*z*are measured and at which both*x*and*y*equal zero.[1945–50]

## z-ax·is

(zē′ăk′sĭs) One of the three axes of a three-dimensional Cartesian coordinate system.

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Noun | 1. | z-axis - the third axis in a 3-dimensional coordinate systemcoordinate axis - one of the fixed reference lines of a coordinate system |

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