A mnemonic (. : /nəˈmɒnɨk/ , : /nɛˈmɑːnɪk/ the first m is silent), mnemonic device, or memory device is any learning technique that aids information retention in the human memory.Mnemonics aim to translate information into a form that the brain can retain better than its original form.oth of these words are derived from μνήμη (mnēmē), remembrance, memory. Mnemonics in antiquity were most often considered in the context of what is today known as the art of memory. Ancient Greeks and Romans distinguished between two types of memory: the natural memory and the artificial memory.