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In mathematics, the ordinate of an ordered pair (xy) is its second component, i.e. it is y.

It is the second of the two terms by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes. The first co-ordinate or "x" co-ordinate, is called the abscissa.


  • The point (12, −18) has an ordinate of −18.
  • The point (−7, 3) has an ordinate of 3.

See also

  • Cartesian_coordinate_system#Notations_and_conventions
  • Ordered pair
  • Function
  • Relation (mathematics)
  • Domain
  • Range


This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.