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.
© Webster 1913.