# Ordinate

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See also: ordination

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In mathematics, the **ordinate** of an ordered pair (*x*, *y*) 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.

## Examples

- 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

## References

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

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