What is the full form of "MOU"?

"A memorandum of understanding (MOU or MoU) is a formal agreement between two or more parties. Companies and organizations can use MOUs to establish official partnerships. MOUs are not legally binding but they carry a degree of seriousness and mutual respect, stronger than a gentlemen’s agreement. Often, MOUs are the first steps towards a legal contract. In US law, a memorandum of understanding is synonymous with a letter of intent (LOI), which is a non-binding written agreement that implies a binding contract is to follow."