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
Recent Examples on the Web
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.
—
IEEE Spectrum, 6 Nov. 2023
They are defined by symmetry, and the Greeks knew that there were only five possibilities meeting the criteria: the tetrahedron, cube, octahedron, dodecahedron and icosahedron.
—Eugenia Cheng, WSJ, 10 Aug. 2017
Diamonds, which form eight-sided crystals called octahedrons, can be billions of years old, Dr. Harlow said.
—C. Claiborne Ray, New York Times, 12 June 2017
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IEEE Spectrum, 6 Nov. 2023
They are defined by symmetry, and the Greeks knew that there were only five possibilities meeting the criteria: the tetrahedron, cube, octahedron, dodecahedron and icosahedron.
—Eugenia Cheng, WSJ, 10 Aug. 2017
Diamonds, which form eight-sided crystals called octahedrons, can be billions of years old, Dr. Harlow said.
—C. Claiborne Ray, New York Times, 12 June 2017
Dictionary Entries Near octahedron
Cite this Entry
“Octahedron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/octahedron. Accessed 6 Feb. 2025.
Copy CitationKids Definition
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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