Snub hecatonicosachoron

The snub hecatonicosachoron, or shi, is a scaliform polychoron. It consists of 120 small snub icosicosidodecahedra and 1440 pentagrammic pyramids. It is notable for having icosahedral snub polyhedra as cells.

Related polychora
This polychoron can be formed as a holosnub truncated faceted hexacosichoron.

Expanding the seside cells in different ways produces two more scaliform polychora: the prismatorhombisnub hecatonicosachoron and retroprismatorhombisnub hecatonicosachoron.