Great dispinosnub dishexacositrishexacosichoron

The great dispinosnub dishexacositrishexacosichoron, or gadnisdextix, is a nonconvex uniform polychoron that consists of 600 great icosahedra, 600 great dodecahedra, 4800 cubohemioctahedra (falling into pairs in the same hyperplanes, forming 2400 compounds of two), 600 great rhombidodecahedra, 600 rhombicosahedra, and 600 great icosicosidodecahedra.

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

It can be obtained as the blend of 5 great dipentary hexacosihecatonicosachora and 5 great 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 great diretrosnub disnub decahecatonicosadishexacosichoron.