Hypertext Webster Gateway: "octahedral"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Octahedral \Oc`ta*he"dral\, a. [See {Octahedron}.]
Having eight faces or sides; of, pertaining to, or formed in,
octahedrons; as, octahedral cleavage.
{Octahedral borax} (Chem.), borax obtained from a saturated
solution in octahedral crystals, which contain five
molecules of water of crystallization; distinguished from
common or prismatic borax.
{Octahedral iron ore} (Min.), magnetite.
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