Term: abscissa: the value of a coordinate on the horizontal axis
Broader: cartesian 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 | Unrelated: ammeter: a meter that measures the flow of electrical current in amperes
Broader: cartesian 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 | Unrelated: plains pocket gopher: gopher of chiefly grasslands of central North America