Mnemosyne Syllabification: (Mne·mos·y·ne)Pronunciation: /nəˈmäsənē, -ˈmäz-/ Greek MythologyDefinition of Mnemosyne the Greek goddess of memory, and the mother of the Muses by Zeus. Origin:from Greek mnēmosunē, literally 'memory'Mnemosyne in other Oxford dictionaries Definition of Mnemosyne in the British & World English dictionary