Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

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

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. : The axis on a graph that is usually drawn as if vertical and usually shows the range of values of a variable dependent on two other variables.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the third axis in a 3-dimensional coordinate system

Etymologies

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