Oblate Ellipsoid

Some articles on oblate ellipsoid, ellipsoid:

Latitude On The Ellipsoid - Ellipsoids
... that a rotating self-gravitating fluid body in equilibrium takes the form of an oblate ellipsoid ... (This article uses the term ellipsoid in preference to the older term spheroid) ... The definition of an oblate ellipsoid is the three dimensional surface generated by the rotation of a two dimensional ellipse about its shorter axis (minor axis) ...