WordNet
cartesian coordinate
n. 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
Usage examples of "cartesian coordinate".
Robin Shaftoe emerges, breathes into his cupped hands, and takes a parade-rest position, signifying that he is available to discharge any responsibilities out here on the Cartesian coordinate plane.