# abscissa meaning

**Noun:****abscissa**(abscissae,abscissas) ab'sisu- The value of a coordinate on the horizontal axis

**Derived forms:**abscissae, abscissas**Type of:**Cartesian coordinate**Encyclopedia:**Abscissa

[Architecture]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

[Electronics]

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.

[Computer]

<*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.

### Examples

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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