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icosahedron
[ ahy-koh-suh-hee-druhn, ahy-kos-uh- ]
noun
- a solid figure having 20 faces.
icosahedron
/ ˌaɪkəsəˈhiːdrən /
noun
- a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles
icosahedron
/ ī-kō′sə-hē′drən /
, Plural icosahedrons
- A polyhedron having twenty faces.
Derived Forms
- ˌicosaˈhedral, adjective
Other Words From
- i·cosa·hedral adjective
Word History and Origins
Origin of icosahedron1
Word History and Origins
Origin of icosahedron1
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.
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.
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.
Many researchers initially questioned Shechtman’s findings, because it is mathematically impossible to fill space using only icosahedrons.
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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