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z-axis

[ zee-ak-sis ]

noun

, Mathematics.
, plural z-ax·es [zee, -ak-seez].
  1. (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.

z-axis

noun

  1. a reference axis of a three-dimensional Cartesian coordinate system along which the z- coordinate is measured

z-axis

/ zē′ăk′sĭs /

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

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Word History and Origins

Origin of z-axis1

First recorded in 1945–50

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