The Collaborative International Dictionary of English v.0.48:
Philippian \Phi*lip"pi*an\, a. Of or pertaining to Philippi, a city of ancient Macedonia. -- n. A native or an inhabitant of Philippi. [1913 Webster]WordNet (r) 3.0 (2006):
Philippian n 1: a native or inhabitant of Philippi in ancient Macedonia