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y-axis definition

y·-axis (wī′ak′sis)

noun pl. y-axes y′·-ax′es (-sēz)

  1. the vertical, or more nearly vertical, axis in a plane Cartesian coordinate system, along which the ordinate is measured
  2. a similar axis that is perpendicular to the x-axis and the z-axis of a three-dimensional Cartesian coordinate system

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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