# abscissa

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Related to abscissa: Abscissa of convergence

## ab·scis·sa

(ăb-sĭs′ə)*n.*

*pl.*

**ab·scis·sas**or

**ab·scis·sae**(-sĭs′ē)

*Symbol*

**x**The coordinate representing the position of a point along a line perpendicular to the

*y*-axis in a plane Cartesian coordinate system.

[New Latin (līnea) abscissa,

*(line) cut off*, from Latin abscissa, feminine past participle of abscindere,*to abscise*; see**abscission**.]## abscissa

(æbˈsɪsə)*n*,

*pl*

**-scissas**

*or*

**-scissae**(-ˈsɪsiː)

(Mathematics) the horizontal or

*x*-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the*y*-axis measured parallel to the*x*-axis. Also :**absciss***or***abscisse**Compare ordinate[C17: New Latin, originally

*linea abscissa*a cut-off line]## ab•scis•sa

(æbˈsɪs ə)*n.,*

*pl.*

**-scis•sas, -scis•sae**(-ˈsɪs i)

(in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis. Compare ordinate.

[1690–1700; < Latin, feminine of

*abscissus,*past participle of*abscindere*to cut off =*ab-*ab- +*scindere*to divide, tear]## ab·scis·sa

(ăb-sĭs′ə) The distance of a point from the y-axis on a graph in the Cartesian coordinate system. It is measured parallel to the x-axis. For example, a point having coordinates (2,3) has 2 as its abscissa. Compare ordinate.

See also related terms for vertical.

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Noun | 1. | abscissa - the value of a coordinate on the horizontal axisCartesian coordinate - one of the coordinates in a system of coordinates that locates a point on a plane or in space by its distance from two lines or three planes respectively; the two lines or the intersections of the three planes are the coordinate axes |

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