octahedron

American  

[ok-tuh-hee-druhn] / ˌɒk təˈhi drən /

noun

plural

octahedrons, octahedra

1. a solid figure having eight faces.

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octahedron British  

/ ˌɒktəˈhiːdrən /

noun

1. a solid figure having eight plane faces

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octahedron Scientific  

/ ŏk′tə-hē′drən /

plural

octahedrons

1. A polyhedron that has eight faces.

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Etymology

Origin of octahedron

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.

From Science Daily • Jun. 6, 2024

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.

From New York Times • Jan. 11, 2022

Octahedral complexes have a coordination number of six, and the six donor atoms are arranged at the corners of an octahedron around the central metal ion.

From Textbooks • Feb. 14, 2019

To bond six fluorine atoms, the 3s orbital, the three 3p orbitals, and two of the 3d orbitals form six equivalent sp3d2 hybrid orbitals, each directed toward a different corner of an octahedron.

From Textbooks • Feb. 14, 2019

Then SD-03 lifted the octahedron in its arms.

From "Ready Player One: A Novel" by Ernest Cline