Small dispinosnub dishexacositrishexacosichoron

The small dispinosnub dishexacositrishexacosichoron, or sadnisdextix, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 600 icosahedra, 4800 cubohemioctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of two), 600 small rhombidodecahedra, 600 rhombicosahedra, and 600 small icosicosidodecahedra.

One small stellated dodecahedron, one icosahedron, eight cubohemioctahedra (eight compounds), five small rhombidodecahedra, five rhombicosahedra, and five small icosicosidodecahedra join at each vertex.

It can be obtained as the blend of 5 small dipentary hexacosihecatonicosachora and 5 small dipentary hecatonicosihexacositrishecatonicosachora. In the process, some of the cubohemioctahedron cells blend out.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small diretrosnub disnub decahecatonicosadishexacosichoron.