a system of representing points in space in terms of their distance from a given origin measured along a set of mutually perpendicular axes. Written (x,y,z) with reference to three axes
Cartesian coordinates in American English
Geometry
1.
a pair of numbers that locate a point in a plane by its distances from two fixed, intersecting, usually perpendicular lines in the same plane
see also abscissa, ordinate
2.
a triad of numbers which locate a point in space by its distance from three fixed planesthat intersect one another at right angles