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icosahedron

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.12 sec.
i·co·sa·he·dron  (-ks-hdrn, -ks-)
n. pl. i·co·sa·he·drons or i·co·sa·he·dra (-dr)
A polyhedron having 20 faces.

[Greek eikosaedron : eikosi, twenty; see wkt- in Indo-European roots + -edron, -hedron.]

i·cosa·hedral (-drl) adj.
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icosahedron

icosahedron [ike-oh-sa-heed-ron, -dra]
Noun
pl -drons or -dra a solid figure with 20 faces [Greek eikosi twenty + -edron -sided]

icosahedron  (-ks-hdrn)
Plural icosahedrons or icosahedra
A polyhedron having twenty faces.

icosahedral adjective
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icosahedron
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.icosahedronicosahedron - any polyhedron having twenty plane faces
polyhedron - a solid figure bounded by plane polygons or faces


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? Mentioned in ? References in periodicals archive
 
The primary thesis in the Mysterium cosmographicum is that God created the (Copernican) universe to express the five platonic solids (the cube, tetrahedron, octahedron, icosahedron, and dodecahedron).
Others, known as icosahedrons or ``bird cages,'' have a distinct geometric design.
Shortly thereafter, the company began marketing the novelty item as the Syco-Slate; although the design remained relatively unchanged, the molasses was replaced with a form of generic anti-freeze and the laminated paper cube was replaced with a 20-sided die, or an icosahedron.
 
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