polyhedron
Noun

A solid figure bounded by plane polygons or faces (synset 113906542)
hypernym: solid  a threedimensional shapehyponym:
 convex polyhedron  a polyhedron any plane section of which is a convex polygon
 concave polyhedron  a polyhedron some of whose plane sections are concave polygons
 prism  a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
 pyramid  a polyhedron having a polygonal base and triangular sides with a common vertex
 tetrahedron  any polyhedron having four plane faces
 pentahedron  any polyhedron having five plane faces
 hexahedron  any polyhedron having six plane faces
 octahedron  any polyhedron having eight plane faces
 decahedron  any polyhedron having ten plane faces
 dodecahedron  any polyhedron having twelve plane faces
 icosahedron  any polyhedron having twenty plane faces
 ideal solid, platonic body, platonic 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
 prismatoid  a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid
 trapezohedron  a polyhedron whose faces are trapeziums
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