Chateaubriand, François-René Syllabification: (Cha·teau·bri·and, François-René)Pronunciation: /SHaˌtōbrēˈäN/Definition of Chateaubriand, François-René Vicomte de (1768–1848), French writer and diplomat. Notable works: Le Génie du Christianisme (1802) and Mémoires d’outre-tombe (autobiography, 1849–50). Chateaubriand, François-René in other Oxford dictionaries Definition of Chateaubriand, François-René in the British & World English dictionary