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.

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

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the great dipentary trishecatonicosachoron.