Small dispinosnub prismatosnubdisnub dishexacositrishexacosichoron

The small dispinosnub prismatosnubdisnub dishexacositrishexacosichoron, or sednasposid sedaxtix, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 600 great dodecahedra, 4800 cubohemioctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of two), 600 small dodecicosahedra and 600 small ditrigonal dodecicosidodecahedra (forming 600 compounds of one of each), 600 icosidodecadodecahedra, 3600 pentagrammic prisms, and 6000 triangular prisms.

One small stellated dodecahedron, one great dodecahedron, eight cubohemioctahedra (eight compounds), five small dodecicosahedra and five small ditrigonal dodecicosidodecahedra (ten compounds), five icosidodecadodecahedra, five pentagrammic prisms, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary hecatonicosiprismatohecatonicosihexacosichora and 5 small based dipentary prismatodishecatonicosihexacosihecatonicosachora. 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.