regular octahedron

/ˌrɛg(jə)lər ˈɑktəˌhidrən/

Other forms: regular octahedrons; regular octahedra

Definitions of regular octahedron

1. noun

   an octahedron with eight equilateral triangles as faces
   type of:

   Platonic body, Platonic solid, ideal solid, regular convex polyhedron, regular convex solid, regular polyhedron

   any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent