One of five regular solids (a tetrahedron, cube, octahedron, dodecahedron, or icosahedron).
More example sentences
- Kepler connected the planetary orbits with the five regular polyhedra, or Platonic solids.
- His geometrical inclinations led him to propose that these particles had regular, mathematical shapes: the polyhedra called regular Platonic solids.
- If each face is an equilateral triangle, the result is a regular tetrahedron, one of the five Platonic solids.
Definition of Platonic solid in:
- The British & World English dictionary