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Meaning of x-axis

x-ax•is

Pronunciation: (eks'ak"sis), [key]
— pl. x-ax•es
  1. Also called(in a plane Cartesian coordinate system) the axis, usually horizontal, along which the abscissa is measured and from which the ordinate is measured. See diag. under
  2. (in a three-dimensional Cartesian coordinate system) the axis along which values of x are measured and at which both y and z equal zero.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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