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
Sorry, no etymologies found.