Webster's Revised Unabridged Dictionary · 1913

octahedral

octahedral (ok`tȧ*hē"dral) , adjective

[See octahedron.]

Having eight faces or sides; of, pertaining to, or formed in, octahedrons; as, octahedral cleavage; an octahedral crystal.
Collocations (2)
octahedral borax (Chemistry) , 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 (Mineralogy) , magnetite.