oblate spheroidal coordinate system

oblate spheroidal coordinate system

[¦ō‚blāt 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 minor axis of the ellipses, together with the planes passing through the axis of rotation.