Hecatonicosidishecatonicosachoron

The hecatonicosidishecatonicosachoron, or hidy, is a nonconvex uniform polychoron that consists of 120 quasitruncated great stellated dodecahedra, 120 quasitruncated small stellated dodecahedra, and 120 great icosicosidodecahedra. Three quasitruncated great stellated dodecahedra, three quasitruncated small stellated dodecahedra, and three great icosicosidodecahedra join at each vertex.

It also has 120 dodecahedra and 600 tetrahedra as pseudofacets.

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