1690s (Englished as abscisse), from Latin abscissa (linea) "(a line) cut off," or (recta ex diametro) abscissa "(a line) cut off (from the diameter)," fem. of abscissus "cut o [..]

the horizontal coordinate of a point in a two-dimensional Cartesian coordinate system. • the abscissa is the first term in an ordered pair.

The horizontal coordinate in a two-dimensional system of rectangular Cartesian coordinates; usually denoted by x; also, the horizontal axis of any graph.

The first element in a coordinate pair. When graphed in the coordinate plane, it is the distance from the y-axis. Frequently called the x coordinate.

the V-axis of a graph used to display data- horizontal axis going from left to right

This is the X coordinate on a Cartesian graph. The Cartesian system is the one that looks like a grid full of squares.

The value corresponding to the horizontal distance of a point on a graph from the Y axis. The X coordinate.

(n) the value of a coordinate on the horizontal axis

The x coordinate on an x,y graph (y is the ordinate).

The horizontal line of a graph, used to record the time that behavior occurred.

The horizontal or x-axis on a graph. In applied behavior analysis, the abscissa usually depicts successive trials or the passage of time, such as days.

<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 Cartes [..]

<geometry> One of the elements of reference by which a point, as of a curve, is referred to a system of fixed rectilineal coordinate axes. When referred to two intersecting axes, one of them cal [..]

The horizontal coordinate of a set of rectangular coordinates. Also used in a similar sense in connection with oblique coordinates.

the coordinate of a point in a plane Cartesian coordinate system obtained by measuring parallel to the x-axis ("the 'x' value").

(geometry) The first of the two terms 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 [..]