Defn: Having eight pistils or styles; octogynous.
OCTAHEDRAL
Oc`ta*he"dral, a. Etym: [See Octahedron.]
Defn: 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.
OCTAHEDRITE
Oc`ta*he"drite, n. (Min.)
Defn: Titanium dioxide occurring in acute octahedral crystals.
OCTAHEDRON
Oc`ta*he"dron, n. Etym: [Gr. (Geom.)
Defn: A solid bounded by eight faces. The regular octahedron is contained by eight equal equilateral triangles.
OCTAMEROUS
Oc*tam"er*ous, a. Etym: [Octa- + Gr. (Biol.)
Defn: Having the parts in eights; as, an octamerous flower; octamerous mesenteries in polyps.
OCTAMETER Oc*tam"e*ter, n. Etym: [Cf.L. octameter in eight feet. See Octa-, and meter.] (Pros.)