octahedron
noun
a solid figure having eight faces.
octahedra
-
pluralof octahedron.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
To create the new structures, the researchers synthesized silver nanoparticles shaped like truncated octahedra, which they call "mecons."
From Science Daily ● May 30, 2026
The conduction path of pyrochlore-type structure cover the F ions located in the tunnels created by MO6 octahedra.
From Science Daily ● Apr. 2, 2024
Examples of simple forms amongst crystallized substances are octahedra of alum and spinel and cubes of salt and fluorspar.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various
It is worthy of notice that in diatomic elements four funnels open on the faces of tetrahedra; in triatomic, six funnels on the faces of cubes; in tetratomic, eight funnels on the faces of octahedra.
From Occult Chemistry Clairvoyant Observations on the Chemical Elements by A. P. Sinnett
It is occasionally found as uneven cubes and octahedra, but more often as dendritic or earthy masses, with a blackish lead-grey colour and metallic lustre.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" by Various
