- regular polyhedron, regular convex solid, regular convex polyhedron, Platonic body, Platonic solid, ideal solid - any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
--1 is a kind of polyhedron
--1 has particulars:regular tetrahedron; cube, regular hexahedron; regular dodecahedron; regular octahedron; regular icosahedron