In geometry, the great grand 120-cell or great grand polydodecahedron is a regular star 4-polytope with Schläfli symbol {5,5/2,3}.
It is one of 10 regular Schläfli-Hess polytopes.
It has the same edge arrangement as the small stellated 120-cell.
This 4-polytope article is a stub.
You can help Wikipedia by expanding it.