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icosahedron |
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icosahedron (īkō'səhē`drən): see polyhedron polyhedron (pŏl'ēhē`drən), closed solid bounded by plane faces; each face of a polyhedron is a polygon . ..... Click the link for more information. . icosahedron a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles icosahedron [ī¦kä·sə¦hē·drən] (mathematics) A 20-sided polyhedron. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Picornaviruses constitute a diverse family of single-stranded positive-sense RNA viruses whose genome is packed into a nonenveloped icosahedral capsid (1). Over half of all virus families have shells with icosahedral symmetry. By rapid solidification we had made a solid that was discretely diffracting like a periodic crystal, but with icosahedral symmetry. |
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