Quasiprismatodishecatonicosachoron

The quasiprismatodishecatonicosachoron, or quipdohi, is a nonconvex uniform polychoron that consists of 120 great icosahedra, 120 great dodecahedra, 1200 triangular prisms, and 720 pentagonal prisms. 1 great icosahedron, 1 great dodecahedron, 5 triangular prisms, and 5 pentagonal prisms join at each vertex.

Despite its name, it is the result of expanding the cells of either a great grand hecatonicosachoron or a great faceted hexacosichoron outwards. Thus, it can also be called a great prismatodishecatonicosachoron.

It is in the same regiment as the great dipentary trishecatonicosachoron.

Blending 10 quasiprismatodishecatonicosachora results in the great difusiprismatosnub diprismatosnub disdishexacosichoron, which is scaliform.