Icosahedral

Icosahedral is a term used in geometry to describe a polyhedron with 20 faces. The term is derived from the Greek words for twenty (eikosi) and seat (hedra). In the context of virology, icosahedral refers to the shape of certain viruses.

Geometry

In geometry, an icosahedron is a regular polyhedron with 20 identical equilateral triangular faces, 30 edges and 12 vertices. It is one of the five Platonic solids, and the one with the most faces.

Virology

In virology, an icosahedral virus is a virus that possesses an icosahedral capsid, an outer layer of protection for the virus, which is made from identical protein subunits. Examples of icosahedral viruses include adenoviruses, picornaviruses, and herpesviruses.

See also

• Capsid
• Virus
• Polyhedron
• Platonic solids

References

Icosahedral Resources
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