The 
- (vertical) coordinate of a point in
a two dimensional coordinate system. Physicists and astronomers sometimes use the
term to refer to the axis itself instead of the distance along it.
Ordinate
See also
Abscissa, x-Axis, y-Axis, z-AxisExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Ordinate." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Ordinate.html