truncated icosidodecahedron noun1 •An Archimedean solid with 62 regular faces (12 decagons, 20 hexagons and 30 squares) and 180 edges.The truncated icosahedron and truncated icosidodecahedron have fivefold symmetry and cannot four four-connected frameworks with lattice symmetry. — 1962 formstruncated icosidodecahedra · truncated icosidodecahedrons