term:

Memorandum

memorandum n

pl: -dums or: -da [-də]
1 : a usually informal written communication
2 : a record (as a note) which is used by a party seeking to enforce an otherwise oral agreement in accordance with the Statute of Frauds to prove that the other party agreed to a contract and which need not contain all the terms of the contract itself
3 : brief
4 : memorandum decision

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.