	The city was known as Augustodurum in the Roman Empire. It means the "durum" (Celtic word "duro-" 'door', 'gate', Welsh ', Breton ' 'door', 'gate') dedicated to Augustus, Roman Emperor. The Celtic word "duron", Latinised as "durum", was probably used to translate the Latin word "forum" (Compare Fréjus "Forum Julii", dedicated to Julius (Caesar)).