Definition of "icosidodecahedron" []

• A semiregular polyhedron with twelve faces that are regular pentagons and twenty that are equilateral triangles. (noun)

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• "These are simply extraordinary: hand-drawn images of immensely complex geometrical bodies, among them the 72-sided hebdomicontadissaedron and the very first representation in history of icosidodecahedron, that is, a three-dimensional solid with 20 triangular faces and 12 pentagonal faces."
• "Then there are the 13 Archimedean solids (PolyhedronData [ "Archimedean"]; the cuboctahedron, icosidodecahedron, truncated cube, etc.), constructed by requiring the same configuration at each vertex, but allowing more than one kind of regular face."
• "It's a skeletal icosidodecahedron one of Leonardo da Vinci's favorite shapes."