Small snubretrosnub prismatodisnub dishexacositrishexacosichoron

The small snubretrosnub prismatodisnub dishexacositrishexacosichoron, or sosirspid sadixtix, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra and 600 great icosahedra (some of which lie in the same hyperplanes, forming 600 compounds of one of each), 600 icosahedra, 2400 octahemioctahedra and 2400 cuboctahedra (forming 2400 compounds of one of each), 600 cubohemioctahedra (forming 120 great antirhombicosahedra), 600 icosidodecadodecahedra, 600 small dodecicosidodecahedra, and 6000 triangular prisms.

One small stellated dodecahedron and one great icosahedron (two compounds), one icosahedron, four octahemioctahedra and four cuboctahedra (eight compounds), one cubohemioctahedron (one compound), five icosidodecadodecahedra, five small dodecicosidodecahedra, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary prismatohexacosihecatonicosachora and 5 small dipentary tetrishecatonicosihexacosichora. In the process, some of the octahemioctahedron and cuboctahedron cells blend out.

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