Entry 1 sense Webster, 1913 Pacification /păsˌ-əf-ək-āsh'-ən/ · Pa·cif·i·ca·tion · IPA /pˌæsəfəkˈeɪʃən/ 01 n. The act or process of pacifying, or of making peace between parties at variance; reconciliation. 1. The act or process of pacifying, or of making peace between parties at variance; reconciliation.