- Noun: abscissa (abscissae,abscissas) ab'sisu
- The value of a coordinate on the horizontal axis
Derived forms: abscissae, abscissas
Type of: Cartesian coordinate
In the plane Cartesian coordinate system, the horizontal coordinate of a point on a plane; the x-coordinate, obtained by measuring the distance from the point to the y-axis along a line parallel to the x-axis.
abscissa: P, any point; NP, abscissa
1. The independent variable in a function.
2. The axis (usually horizontal) on the graph of a function that indicates the independent variable.
absence-of-ground searching selector A rotary switch that searches for an ungrounded contact in a dial telephone system.
<mathematics> The horizontal or x coordinate on an (x, y) graph; the input of a function against which the output is plotted.
The vertical or y coordinate is the "ordinate".
See Cartesian coordinates.
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- the experimental curve runs nearly parallel to the abscissa.
- abscissa of absolute convergence
- be four distinct points on the abscissa of the Cartesian plane.
- The proof is implicit in the definition of abscissa of convergence.
- Thus, the radius and the abscissa of the centre of the circle are