zaxis

z-axis

[zee-ak-sis]
noun, plural z-axes [zee-ak-seez] . Mathematics.
(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:
1945–50

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Collins
World English Dictionary
z-axis
 
n
a reference axis of a three-dimensional Cartesian coordinate system along which the z-coordinate is measured

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
z-axis   (zē'āk'sĭs)  Pronunciation Key 
One of the three axes of a three-dimensional Cartesian coordinate system.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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