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Definition of Cartesian coordinate
1. Noun. 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.
Definition of Cartesian coordinate
1. Noun. (geometry) The coordinates of a point measured from an origin along a horizontal axis from left to right (the ''x-axis'') and along a vertical axis from bottom to top (the ''y-axis''). This can be extended to three-dimensions by the z-axis perpendicular to the x- and y-axes. ¹
¹ Source: wiktionary.com