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Look up abscissa in Wiktionary, the free dictionary. |
In mathematics, abscissa (plural abscissae) refers to the first element of an ordered pair.
It is the first of the two terms (x, y) by which a point is referred to, in a system of fixed rectilinear coordinate (Cartesian coordinate) axes. The abscissa is also known as the "x" coordinate of a point. The second coordinate, or "y" coordinate, is called the ordinate.
Examples
- The point (12, -18) has an abscissa of 12.
- The point (-7, 3) has an abscissa of -7.
See also
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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