HOW TO PRONOUNCE
icosahedron
/(ˌ)aɪˌkoʊsəˈhiːdɹən/
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American Pronunciation Guide · 0:37
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What does icosahedron mean?
noun
- A polyhedron with twenty faces.
- A regular icosahedron: one of the Platonic solids, all of whose faces are regular (equilateral) triangles
Definitions regrouped for readability · CC BY-SA 4.0
IPA pronunciation
/(ˌ)aɪˌkoʊsəˈhiːdɹən/
Wiktionary contributors · CC BY-SA 4.0 ↗Other dictionary pronunciations
/(ˌ)aɪˌkɒsəˈhiːdɹən//(ˌ)aɪˌkɔsəˈhiːdɹən/
These alternatives are not labeled by regional accent.
Wiktionary contributors · CC BY-SA 4.0 ↗Pronunciation varies by speaker and region. About these dictionary pronunciations.
In the pages of books
See this word in context.
Platonic bodies; cube, rhomboid; tetrahedron, pentahedron, hexahedron, octahedron, dodecahedron, icosahedron, eicosahedron; prism, pyramid; parallelopiped; curb roof, gambrel roof, mansard roof.
From the triangle of which the hypotenuse is twice the lesser side the three first regular solids are formed—first, the equilateral pyramid or tetrahedron; secondly, the octahedron; thirdly, the icosahedron; and from the isosceles triangle is formed the cube.