What does "icosahedral" mean?

Of, relating to, or having the shape of an icosahedron.

What is a synonym for "icosahedral"?

Common synonyms include: octagonal.

How do you pronounce "icosahedral"?

Pronounced //(ˌ)aɪˌkoʊsəˈhiːdɹəl//.

Icosahedral

//(ˌ)aɪˌkoʊsəˈhiːdɹəl// adj

adj ·Rare ·Advanced level

Definitions

Adjective

1
Of, relating to, or having the shape of an icosahedron. not-comparable
"Of the convex polyhedra with regular faces, the only ones that have tetrahedral, octahedral, or icosahedral symmetry are the Platonic and Archimedean solids."

Adjective

1
of or relating to an icosahedron wordnet

Synonyms

All synonyms

octagonal

Example

More examples

"Of the convex polyhedra with regular faces, the only ones that have tetrahedral, octahedral, or icosahedral symmetry are the Platonic and Archimedean solids."

Etymology

From icosa- + -hedral.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.