MauretaniaPronunciation: /ˌmɒrɪˈteɪnɪə/Definition of Mauretania an ancient region of North Africa, corresponding to the northern part of Morocco and western and central Algeria. Derivatives Mauretanian adjective & noun Origin:based on Latin Mauri 'Moors', by whom the region was originally occupiedMauretania in other Oxford dictionaries Definition of Mauretania in the US English dictionary