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WordReference Random House Unabridged Dictionary of American English © 2024spher′ical coor′dinates, [Math.]- Mathematicsa system of coordinates for locating a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
Collins Concise English Dictionary © HarperCollins Publishers:: spherical coordinates pl n - three coordinates that define the location of a point in three-dimensional space in terms of the length r of its radius vector, the angle, θ, which this vector makes with one axis, and the angle, φ, made by a second axis, perpendicular to the first, with the plane containing the first axis and the point. Usually written (r, θ, φ)
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