# z-axis

[zee-ak-sis]

- (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.

## Origin of z-axis^{}

First recorded in 1945–50

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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

# z-axis

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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# z-axis

[zē′ăk′sĭs]

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

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.