Also found in: Thesaurus, Encyclopedia, Wikipedia.
(Mathematics) any of the five possible regular polyhedra: cube, tetrahedron, octahedron, icosahedron, and dodecahedron. Also called (esp formerly): Platonic body
[C17: named after Plato1, who was the first to list them]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Switch to new thesaurus
|Noun||1.||Platonic solid - any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent|
polyhedron - a solid figure bounded by plane polygons or faces
regular tetrahedron - a tetrahedron with four equilateral triangular faces
regular dodecahedron - a dodecahedron with twelve regular pentagons as faces
regular octahedron - an octahedron with eight equilateral triangles as faces
regular icosahedron - an icosahedron with twenty equilateral triangles as faces
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.