/ trænˈzækʃn; NAmE / noun
1.
[ C ] transaction (between A and B) a piece of business that is done between people, especially an act of buying or selling
SYN deal :
financial transactions between companies
commercial transactions
2.
[ U ] transaction of sth ( formal ) the process of doing sth :
the transaction of government business
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WORD ORIGIN
late Middle English (as a term in Roman Law): from late Latin transactio(n-) , from transigere drive through, from trans- through + agere do, lead.