[ zee-ak-sis ]
/ ˈziˌæk sɪs /

noun, plural z-ax·es [zee-ak-seez] /ˈziˌæk siz/. 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.

Words nearby z-axis

Origin of z-axis

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for 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 Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for z-axis

[ zēăk′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.