Defn: See Octahedral.
OCTAEMERON
Oc`ta*em"e*ron, n. Etym: [NL., fr. Gr. (Eccl.)
Defn: A fast of eight days before a great festival. Shipley.
OCTAGON
Oc"ta*gon, n. Etym: [Gr. cctogone.]
1. (Geom.)
Defn: A plane figure of eight sides and eight angles.
2. Any structure (as a fortification) or place with eight sides or angles. Regular octagon, one in which the sides are all equal, and the angles also are all equal.
OCTAGONAL
Oc*tag"o*nal, a.
Defn: Having eight sides and eight angles.
OCTAGYNOUS
Oc*tag"y*nous, a. Etym: [Octa- + Gr. (Bot.)