Webster's Revised Unabridged Dictionary · 1913

Octostyle

Octostyle , adjective

[Octo- + Greek {not transcribed} a pillar: compare French octostyle.]

(Architecture) 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.
(Architecture) An octostyle portico or temple.