a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles
Derived forms
icosahedral (ˌicosaˈhedral)
adjective
Word origin
C16: from Greek eikosaedron, from eikosi twenty + -edron-hedron
Examples of 'icosahedra' in a sentence
icosahedra
Finally, the icosahedra are fully destroyed, resulting in structural failure.
Jun Li, Lisheng Liu, Shuang Xu, Jinyong Zhang, Yuanli Wu 2018, 'The Effects of Carbon Content on the Anisotropic Deformation Mechanism of Boron Carbide',Materialshttp://www.mdpi.com/1996-1944/11/10/1861. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Large crystalline molecular shells buckle spontaneously into icosahedra while multicomponent shells buckle into various polyhedra.
Monica Olvera de la Cruz 2016, 'Mesoscale studies of ionic closed membranes with polyhedral geometries', APL Materialshttp://dx.doi.org/10.1063/1.4953570. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Continuum elastic theory explains the buckling of closed shells with one elastic component into icosahedra.
Monica Olvera de la Cruz 2016, 'Mesoscale studies of ionic closed membranes with polyhedral geometries', APL Materialshttp://dx.doi.org/10.1063/1.4953570. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These findings may suggest a link between the deformation and destruction of icosahedra with short-range order.
Yun Cheng, Chuanxiao Peng, Zhenting Zhang, Pengfei Wang, Shengzhong Yuan, Li Wang 2017, 'Plastic Deformation of Pressured Metallic Glass', Materialshttps://www.mdpi.com/1996-1944/10/12/1361. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The carbon atoms can be incorporated into different positions in both the linear groups and the icosahedra.
I. D. Kovalev, V. I. Ponomarev, V. I. Vershinnikov, S. V. Konovalikhin 2013, 'XRD Investigation of SHS-Produced Boron Carbide', Eurasian Chemico-Technological Journal http://ect-journal.kz/index.php/ectj/article/view/257. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
On the other hand, the main polyhedra in the configuration are icosahedra and the bcc structure.
Yong Xu, Meijie Yu, Rongfu Xu, Xianzhong Wang, Zhigang Wang, Yongfeng Liang, JunpinLin 2016, 'Short-to-Medium-Range Order and Atomic Packing in Zr48Cu36Ag8Al8 Bulk Metallic Glass',Metalshttp://www.mdpi.com/2075-4701/6/10/240. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)