Gaullism Syllabification: (Gaull·ism)Pronunciation: /ˈgôˌlizəm/Definition of Gaullism noun the principles and policies of Charles de Gaulle, characterized by their conservatism, nationalism, and advocacy of centralized government. Derivatives Gaullist noun & adjective Origin: 1940s: from French GaullismeGaullism in other Oxford dictionaries Definition of Gaullism in the British & World English dictionary