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octahedron

[ ok-tuh-hee-druhn ]

noun

, plural oc·ta·he·drons, oc·ta·he·dra [ok-t, uh, -, hee, -dr, uh].
  1. a solid figure having eight faces.


octahedron

/ ˌɒktəˈhiːdrən /

noun

  1. a solid figure having eight plane faces
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


octahedron

/ ŏk′tə-hēdrən /

, Plural octahedrons

  1. A polyhedron that has eight faces.


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Word History and Origins

Origin of octahedron1

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

He doubted, for the same reason, that particles of air could be shaped like an octahedron.

Dmitry Fuchs proved the results for the octahedron and icosahedron the next year.

Of the stauraxonia isopola we have, for instance, the double pyramids, one of the simplest forms of the octahedron.

Its crystalline forms are very numerous, and are referrible to the octahedron, and the pyramidal prism.

The prevailing form of crystallization is the rectangular octahedron, whose angles and edges are variously modified.

The members of the group are all tetrads, and have eight funnels, opening on the eight faces of the octahedron.

We have again the funnel with its ovoids, but now there are eight funnels opening on the eight faces of the octahedron.

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