Memorandum of Understanding, a formal agreement between parties outlining terms and understanding of a relationship or deal. Often used in business and diplomacy.
Acronym formed from 'Memorandum of Understanding,' where 'memorandum' comes from Latin 'memorandus' (to be remembered) and 'understanding' from Old English 'understandan' (to comprehend). MOUs became common in 20th-century diplomacy and business.
MOUs occupy a fascinating legal gray area - they're more than handshake agreements but less than binding contracts, reflecting humanity's need for formal recognition of informal relationships. They're particularly crucial in international relations where full treaties might be too cumbersome.
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