Before revision: Phantom borders () are informal "borders" of difference that reflect historical political borders and geopolitical situations that have been changed but have a continuing impact on local communities .Zajc, Marko.
After revision: A phantom border () is an informal delineation following the approximate course of an abolished political border, associated with demographic differences on each side as a continuing legacy of historical division, despite nominal geopolitical union .Zajc, Marko.