Invertidodecahedronary hecatonicosachoron

The invertidodecahedronary hecatonicosachoron, or idhi, is a noble polychoron in the small stellated hecatonicosachoron's regiment. It consists of 120 ditrigonary dodecadodecahedra, 20 of which meet each of its 120 vertices.