Small spinoretrosnub snub prismatosnub trishexacosipentishecatonicosachoron

The small spinoretrosnub snub prismatosnub trishexacosipentishecatonicosachoron, or snarsis pistaxphi, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 600 icosahedra, 2400 octahemioctahedra and 2400 cubohemioctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of one of each), 600 cuboctahedra (forming 120 antirhombicosicosahedra), 600 small dodecicosahedra, 3000 truncated tetrahedra (600 of which form 120 truncated chiricosahedra), and 3600 pentagrammic prisms.

One small stellated dodecahedron, one icosahedron, four octahemioctahedra and four cubohemioctahedra (eight compounds), one cuboctahedron (one compound), five small dodecicosahedra, five truncated tetrahedra (one compound, four single), and five pentagrammic prisms join at each vertex.

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

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