cylindrical coordinate
noun Date: circa 1934 any of the coordinates in space obtained by constructing in a plane a polar coordinate system and on a line perpendicular to the plane a linear coordinate system

New Collegiate Dictionary. 2001.

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• cylindrical coordinate — noun mathematics : any of the coordinates in space obtained by constructing in a plane a polar coordinate system and on a line perpendicular to the plane at the pole a linear coordinate system …   Useful english dictionary

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• Spherical coordinate system — In mathematics, the spherical coordinate system is a coordinate system for representing geometric figures in three dimensions using three coordinates: the radial distance of a point from a fixed origin, the zenith angle from the positive z axis… …   Wikipedia