{| class=wikitable align=right |+ Spheroids with vertical rotational axes |- align-center |colspan=3|360px |- style="text-align: center" !colspan=2 width=100|oblate||prolate |}
{| class=wikitable align=right |+ Spheroids with vertical rotational axes |- align-center |colspan=3|360px |- style="text-align: center" !colspan=2 width=100|oblate||prolate |}
A spheroid, also known as an ellipsoid of revolution or rotational ellipsoid, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters. A spheroid has circular symmetry.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).