memorandum

1 a written communication giving information or directions I'm waiting for the memorandum that will explain the new vacation policy Synonyms directive, memo, notice Related Words announcement, bulletin, declaration, notification, posting, proclamation, pronouncement, release; dispatch, report; edict, pronunciamento, rescript; charge, command, dictate; directions, instructions, orders, word; encyclical, epistle, jotting, letter, mail, message, missive, note, post [chiefly British]

2 a message on paper from one person or group to another the studio executives depend on endless memoranda to keep track of what's going on at a movie shot on location Synonyms dispatch, epistle, memo, letter, missive, noteRelated Words billet-doux, open letter; airmail, card, electronic mail, e-mail, junk mail, mail, postal card, postcard; communication, report; encyclical

3 a usually brief written reminder dispatched a memorandum to her secretary about the assignment Synonyms jotting, memo, note, notationRelated Words bordereau, memoir, memorial, minutes, protocol, report; line; document, writing