Illustration of octahedron
octahedron
noun
oc·ta·he·dron
ˌäk-tə-ˈhē-drən 
plural octahedrons or octahedra
ˌäk-tə-ˈhē-drə
: a solid bounded by eight plane faces
Examples of octahedron in a Sentence
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Each cluster consists of an octahedron made of six rhenium atoms nestled within a cube made of eight selenium atoms, with a chlorine atom on the top and bottom of the cluster.
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IEEE Spectrum,
6 Nov. 2023
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IEEE Spectrum,
6 Nov. 2023
Cite this Entry
“Octahedron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/octahedron. Accessed 5 Jul. 2026.
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octahedron
noun
oc·ta·he·dron
ˌäk-tə-ˈhē-drən
plural octahedrons or octahedra
-drə
: a polyhedron that has eight faces
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