Cubo-octahedron :: Cubo-octahedron (n.) A combination of a cube and octahedron, esp. one in which the octahedral faces meet at the middle of the cubic edges..
Hexoctahedron :: Hexoctahedron (n.) A solid having forty-eight equal triangular faces.
Octahedron :: Octahedron (n.) A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.
Trisoctahedron :: Trisoctahedron (n.) A solid of the isometric system bounded by twenty-four equal faces, three corresponding to each face of an octahedron..