octahedron

[ok-tuh-hee-druhn]

noun

plural

octahedrons, octahedra 

1. a solid figure having eight faces.

octahedron

/ ˌɒktəˈhiːdrən /

noun

1. a solid figure having eight plane faces

octahedron

plural

octahedrons 

1. A polyhedron that has eight faces.

Word History and Origins

Origin of octahedron¹

1560–70; < Greek oktáedron eight-sided (neuter of oktáedros ), equivalent to okta- octa- + -edron -hedron

Example Sentences

"Specifically, these molecules introduce in-plane hydrogen bonding that is compatible with both the ionic nature and octahedron spacing of halide perovskites," she said.

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All of this is enough to send any mother into a spiral of madness, or an even more elaborate shape — a Möbius strip of insanity, an octahedron of derangement.

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Adjacent octahedrons were rotated 90 degrees from one another and connected at the corners.

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The Feb. 22 Local Living article “Give your bookshelf a little more character” included a geometric object labeled “large octahedron.”

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The second is a specific bonding geometry, which is achieved when octahedra formed from metal and oxygen ions share their edges to form a honeycomb lattice.

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