Antiochian \An`ti*o"chi*an\, a. 1. Pertaining to Antiochus, a contemporary with Cicero, and the founder of a sect of philosophers. 2. Of or pertaining to the city of Antioch, in Syria. {Antiochian epoch} (Chron.), a method of computing time, from the proclamation of liberty granted to the city of Antioch, about the time of the battle of Pharsalia, B.C. 48.