Platonic solid

Platonic solid

n

(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

Thesaurus

Noun

1.

Platonic solid - any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent ideal solid, Platonic body, regular convex polyhedron, regular convex solid, regular polyhedron polyhedron - a solid figure bounded by plane polygons or faces regular tetrahedron - a tetrahedron with four equilateral triangular faces cube, regular hexahedron - a hexahedron with six equal squares as 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

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