from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any one of the following five polyhedra: the regular tetrahedron, the cube, the regular octahedron, the regular dodecahedron and the regular icosahedron.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
Named after the Greek philosopher Plato, who wrote about these solids in his treatise Timaeus. (Wiktionary)