prolate spheroidal coordinate system

prolate spheroidal coordinate system

[¦prō‚lāt sfir¦ȯid·əl kō′ȯrd·ən·ət ‚sis·təm]
(mathematics)
A three-dimensional coordinate system whose coordinate surfaces are the surfaces generated by rotating a plane containing a system of confocal ellipses and hyperbolas about the major axis of the ellipses, together with the planes passing through the axis of rotation.
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