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. [1913 Webster] Octosyllabic