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icosahedron

[ ahy-koh-suh-hee-druhn, ahy-kos-uh- ]

noun

plural icosahedrons, icosahedra
  1. a solid figure having 20 faces.


icosahedron

/ ˌɪəəˈːə /

noun

  1. a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles
“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

icosahedron

/ ī-ō′sə-ŧə /

, Plural icosahedrons

  1. A polyhedron having twenty faces.
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Derived Forms

  • ˌDzˈ, adjective
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Other yvlogs From

  • ·ȴ·d adjective
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yvlog History and Origins

Origin of icosahedron1

1560–70; < Greek 𾱰DzáDz, equivalent to eikosa- (variant of eikosi-, combining form of íDz twenty) + -edron -hedron
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yvlog History and Origins

Origin of icosahedron1

C16: from Greek eikosaedron, from eikosi twenty + -edron -hedron
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Example Sentences

They are the dominant culture — and filmgoers who have never clutched a 20-sided icosahedron are subject to their throw of the dice.

From

Continental Drift is Earth in miniature, mapped onto a truncated icosahedron — a soccer ball — with its regular patchwork of 12 pentagonal faces and 20 hexagonal faces.

From

There, he can sit and admire it along with the rest of a collection that includes work from real artists, such as the 80-inch infinity light icosahedron sculpture by L.A.’s Anthony James.

From

Many researchers initially questioned Shechtman’s findings, because it is mathematically impossible to fill space using only icosahedrons.

From

More precisely, the structure is about 0.7 nanometres across and is a truncated icosahedron — a polyhedron that has 12 pentagonal and 20 hexagonal faces.

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