transactio
From LSJ
Latin > English (Lewis & Short)
transactĭo: ōnis, f. transigo (postclass.).
I A completing, completion: mundi, Tert. Anim. 55 med.: vitae, Ennod. Ep. 1, 6.—
II In jurid. Lat., an agreement, transaction: de transactionibus, Dig. 2, tit. 15; 50, 16, 230.