The Collaborative International Dictionary
Octostyle
Octostyle \Oc"to*style\, a. [Octo- + Gr. ? a pillar: cf. F. octostyle.] (Arch.) Having eight columns in the front; -- said of a temple or portico. The Parthenon is octostyle, but most large Greek temples are hexastyle. See Hexastyle. -- n. An octostyle portico or temple.
Wiktionary
octostyle
n. (context architecture English) A temple or portico with eight columns in front.