Great hexacosihecatonicosidishecatonicosachoron

The great hexacosihecatonicosidishecatonicosachoron, or gixhidy, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 regular dodecahedra, 120 quasitruncated great stellated dodecahedra, and 120 quasitruncated small stellated dodecahedra. 1 tetrahedron, 1 dodecahedron, 3 quasitruncated great stellated dodecahedra, and 3 quasitruncated small stellated dodecahedra join at each vertex.

Related polychora
The great hexacosihecatonicosidishecatonicosachoron is the colonel of a regiment of 7 members. Its other members include the great hecatonicosafaceted hecatonicosihexacosihecatonicosachoron, great hexacosifaceted trishecatonicosachoron, great hecatonicosihecatonicosihexacosichoron, hecatonicosidishecatonicosachoron, great spinohexacosidishecatonicosachoron, and great spinohecatonicosidishecatonicosachoron.