Definition of icosahedron
icosahedraplay \(ˌ)ī-ˌkō-sə-ˈhē-drə, -ˌkä-\
: a polyhedron having 20 faces
Origin and Etymology of icosahedron
Greek eikosaedron, from eikosi twenty + -edron -hedron — more at vigesimal
First Known Use: 1570
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