Definition of Cartesian coordinate
1 : either of two coordinates (see 3coordinate 1) that locate a point on a plane and measure its distance from either of two intersecting straight-line axes along a line parallel to the other axis
2 : any of three coordinates that locate a point in space and measure its distance from any of three intersecting coordinate planes measured parallel to that one of three straight-line axes that is the intersection of the other two planes
First Known Use of cartesian coordinate
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