Semiregular polyhedron
In geometry, the term semiregular polyhedron (or semiregular polytope) is used variously by different authors. == Definitions == In its original definition, it is a polyhedron with regular polygonal faces, and a symmetry group which is transitive on its vertices; today, this is more commonly referred to as a uniform polyhedron (this follows from Thorold Gosset's 1900 definition of the more general semiregular polytope).