icosahedron

(redirected from icosahedral)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

icosahedron

(īkō'səhē`drən): see polyhedronpolyhedron
, closed solid bounded by plane faces; each face of a polyhedron is a polygon. A cube is a polyhedron bounded by six polygons (in this case squares) meeting at right angles.
..... Click the link for more information.
.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

Icosahedron

A regular polygon bounded by 20 equilateral triangles, with 12 vertices and 20 edges.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

icosahedron

[ī¦kä·sə¦hē·drən]
(mathematics)
A 20-sided polyhedron.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

icosahedron

a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
For 30 hours of milling and treating at 700[degrees]C, a small presence of [omega]-[Al.sub.7][Cu.sub.2]Fe intermetallic phase is observed in the x-ray diffractogram (see Figure 1) and with the increase of the milling time, the appearance of the icosahedral quasicrystalline phase-[phi], together with the formation of the solid solution [beta]-Al (Fe, Cu) and diluted in intermetallic phase [omega]-[Al.sub.7][Cu.sub.2]Fe, these phases become very stable with a time.
Caption: Figure 2: (a) The ball and stick mode of icosahedral [[Cu.sub.8][Se.sub.19]].sup.24-] cluster and its connectivity with twelve [Ge.sup.4+] ions.
They generate the pentagonal quasilattice [B.sub.L] given by rotating and projecting the icosahedral quasilattice B onto the xz-plane.
The researchers' paper in the scientific journal Nature reports on their computational design and experimental testing of a highly stable icosahedral protein nano-cage.
Icosahedral inclusions have been described in [28].
They feature a high coverage 332 icosahedral dimple design pattern that provides greater lift, higher flight and greater distance.
(7) Flaviviruses are single-stranded, positive-sense RNA viruses with icosahedral nucleocapsids.
Figure 5(left) shows the synchrotron high energy X-ray-based pair distribution function analysis of [Au.sub.~500[+ or -]10][(SR).sub.120[+ or -]3] in comparison with fcc-like 100 nm gold nanoparticles, calculated PDF of icosahedral [Au.sub.309] ,Marksdecahedral [Au.sub.389], and truncated octahedral [Au.sub.405].
central part made up of RNA, defensive shell of protein with icosahedral symmetry, and additionally encased in lipid envelope of cellular origin (Beeck and Dubuisson, 2003).
In both cases, the identification of spatial and spectral samples can be done by using the icosahedral grid method in [35].
The 60 copies of the structural proteins are components of its icosahedral shape and the non-structural proteins are responsible for the replication of viral genome in the host cells.