noun abscissa 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 3

noun abscissa the horizontal Cartesian coordinate on a plane, measured from the y-axis along a line parallel with the x-axis to point P 3

noun plural abscissa (in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis. 1

noun abscissa (in a system of coordinates) the x - coordinate, the distance from a point to the vertical or y -axis measured parallel to the horizontal or x -axis. 1

noun abscissa mathematics: coordinate 1

noun Definition of abscissa in Technology (mathematics) Â 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. 1

Also called axis of abscissas. (in a plane Cartesian coordinate system) the axis, usually horizontal, along which the abscissa is measured and from which the ordinate is measured.