centralization UK /ˌsɛntɹəˌlaɪˈzeɪʃən/US /ˌsɛntɹələˈzeɪʃən/ noun1 •The act or process of centralizing, or the state of being centralized; the act or process of combining or reducing several parts into a wholeV-Dem lists the characteristics of autocratization as deteriorations in freedom of expression, the decline of free and fair elections, and the centralization of authority. — 2025 formscentralizations