Small hecatonicosihecatonicosihexacosichoron

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

Related polychora
The small hecatonicosihecatonicosihexacosichoron is the colonel of a regiment of 7 members. Its other members include the small hexacosihecatonicosidishecatonicosachoron, hecatonicosihecatonicosintercepted hecatonicosachoron, small hecatonicosifaceted hecatonicosihexacosihecatonicosachoron, small hexacosifaceted trishecatonicosachoron, small spinohexacosidishecatonicosachoron, and small spinohecatonicosidishecatonicosachoron.