Icosahedrons | definition of icosahedrons by Medical dictionary
icosahedron (redirected from icosahedrons)
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icosahedron (ī-kō″să-hē′drŏn, kŏs″) [Gr. eikosaedron]
A nearly spherical structure made of 20 identical subunits linked at 12 symmetrical corners. Each subunit is an equilateral triangle. Several viruses, including the human immunodeficiency virus (HIV), are icosahedral.
References in periodicals archive
5a, 5b, 5c), or the duality of regular dodecahedrons and a regular icosahedron
of platonic solids: dodecahedrons and icosahedrons
that have epitomized human conception on an abstract plane since the first millennium BCE.
Four or more of these icosahedrons
are bound together to a molecule of porphyrin, an iron-containing molecule that remains preferentially incancer cells.
The structure is similar to the cold virus--both are icosahedrons
, with 60 copies each of four proteins.