Small disprismatodishecatonicosachoron

The small disprismatodishecatonicosachoron, or siddapady, is a nonconvex uniform polychoron that consists of 120 regular dodecahedra, 120 great stellated dodecahedra, 720 pentagonal prisms, and 720 pentagrammic prisms. 1 dodecahedron, 1 great stellated dodecahedron, 3 pentagonal prisms, and 3 pentagrammic prisms join at each vertex. It is the result of expanding the cells of either a grand hecatonicosachoron or a great stellated hecatonicosachoron outwards.

Related polychora
The small disprismatodishecatonicosachoron is the colonel of a regiment of 7 members. The other members include the hecatonicosafaceted prismatodishecatonicosachoron, medial hecatonicosafaceted prismatodishecatonicosachoron, trishecatonicosachoron, disprismatohecatonicosachoron, small spinoprismatohecatonicosihecatonicosachoron, and great spinoprismatohecatonicosihecatonicosachoron.