a principality in SW Europe, on the Mediterranean and forming an enclave in SE France: the second smallest sovereign state in the world (after the Vatican); consists of Monaco-Ville (the capital) on a rocky headland, La Condamine (a business area and port), Monte Carlo (the resort centre), and Fontvieille, a light industrial area. Language: French. Religion: Roman Catholic. Currency: euro. Pop: 38 695 (2017 est). Area: 189 hectares (476 acres)