Hebesphenomegacorona

The hebesphenomegacorona, or hawmco, is one of the 92 Johnson solids (J89). It consists of 1+2+2+2+2+4+4+4+4+4+4 triangles and 1+2 squares.

It is one of several polyhedra near the end of the list of Johnson solids with no obvious relation to any of the uniform polyhedra. The name is derived from "hebespheno" (meaning a wedge-like arrangement of three "lunes", where each lune consists of a square attached to two triangles) and "megacorona" denoting a crown-like structure composed of 12 triangles (as opposed to the smaller "corona" of 8 triangles found in the sphenocorona).