memorandum
mem.o.ran.dum \.mem-*-'ran-d*m\ \-d*\ n or memorandums or mem.o.ran.da [ME, fr. L, neut. of memorandus to be remembered, gerundive of memorar] pl e 1: an informal record; also : a written reminder 2: an informal written note of a transaction or proposed instrument 3: an informal diplomatic communication