Philippi (fĭlĭpˈĪ) [key], ancient city, E Macedonia. Inhabited by Thracians and then Thasians, it was renamed (probably 356 B.C.) by Philip II of Macedon, who developed and fortified it. Near the city was fought the decisive battle in which Octavian (Augustus) and Antony defeated (42 B.C.) Brutus and Cassius.
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