Great diretrosnub dishexacosipentishexacosichoron

The great diretrosnub dishexacosipentishexacosichoron, or gadrosid xippix, is a nonconvex uniform polychoron that consists of 600 great icosahedra and 600 small stellated dodecahedra (falling into pairs in the same hyperplanes, forming 600 compounds of one of each), 1200 icosahedra (forming 600 snub disoctahedra), 4800 octahemioctahedra (forming 2400 compounds of two), 600 great dodecicosahedra and 600 great ditrigonal dodecicosidodecahedra (forming 600 compounds of one of each), and 600 icosidodecadodecahedra.

One great icosahedron and one small stellated dodecahedron (two compounds), two icosahedra (two compounds), eight octahemioctahedra (eight compounds), five great dodecicosahedra and five great ditrigonal dodecicosidodecahedra (ten compounds), and five icosidodecadodecahedra join at each vertex.

It can be obtained as the blend of 5 great dipentary dishecatonicosihexacosihecatonicosachora and 5 great dipentary trishecatonicosihecatonicosihexacosichora. In the process, some of the octahemioctahedron cells blend out.

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