memorandum

noun pl. memorandums or memoranda

1. 1. a short note written to help one remember something or remind one to do something
   2. a record of events or observations, esp. one for future use
2. an informal written communication, as from one department to another in an office
3. in diplomacy, a summary or outline of a subject under discussion, reasons for or against some action, etc.
4. Business a statement, made by the consignor, of the goods and terms of a consignment sent with the privilege of return
5. Law a short written statement of the terms of an agreement, contract, or transaction