n. Something to be remembered: used, originally as mere Latin, and usually abbreviated mem., to introduce a note of a thing to be done.n. A note to help the memory; a record of something for future reference or consideration.n. Specifically In law, a writing in which the terms of a transaction or some part of them are embodied.n. In diplomacy, a summary of the state of a question, or a justification of a decision agreed on. Also (as French) mèmoire.