polydodecahedron

Noun

 * 1) convex regular 4-polytype (four-dimensional analogue of a Platonic solid) with Schläfli symbol {5,3,3}
 * 2) also called 120-cell, dodecaplex (short for "dodecahedral complex"), hyperdodecahedron, hecatonicosachoron, dodecacontachoron and hecatonicosahedroid