a solid figure having 20 faces.
- i·co·sa·he·dral, adjective
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How to use icosahedron in a sentence
That is, he thought where there’s water, you’d need to be able to arrange copies of the icosahedral water particle such that the icosahedra perfectly occupied the entirety of the watery space without overlapping.Undergraduates Hunt for Special Tetrahedra That Fit Together | Kevin Hartnett | February 9, 2021 | Quanta Magazine
Two of these generate the cube and the octahedron; five of these generate the dodecahedron and the icosahedron.Occult Chemistry | Annie Besant and Charles W. Leadbeater
The icosahedron, having twenty equilateral triangles as faces.Bygone Beliefs | H. Stanley Redgrove
Within the earth's orbit inscribe an icosahedron: the sphere inscribed in it will be Venus's orbit.The Life of Galileo Galilei, with Illustrations of the Advancement of Experimental Philosophy | John Elliot Drinkwater Bethune
Now, inscribe in the Earth an icosahedron, the circle inscribed in it will be Venus.The Life of Galileo Galilei, with Illustrations of the Advancement of Experimental Philosophy | John Elliot Drinkwater Bethune
That for the tetrahedron has 12 for its order, for the cube (or octahedron) 24, and for the icosahedron (or dodecahedron) 60.
British Dictionary definitions for icosahedron
a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles
- icosahedral, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for icosahedron
A polyhedron having twenty faces.
- icosahedral adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.