Sphenoverted hecatonicosidishexacosichoron

The sphenoverted hecatonicosidishexacosichoron, or wavhiddix, is a nonconvex uniform polychoron that consists of 600 regular octahedra, 600 truncated tetrahedra, and 120 small icosicosidodecahedra. 1 octahedron, 2 truncated tetrahedra, and 2 small icosicosidodecahedra join at each vertex.

A semi-uniform variant of this polychoron can be constructed as a rectified small ditetrahedronary hexacosihecatonicosachoron.