transactor, ōris, m. [transigo],
a manager , transactor : rerum transactor et administer, Cic. Verr. 2, 2, 28, § 69.
trānsāctor ōris, m trans+1 AC-, a manager, conductor : rerum. ...
An Elementary Latin Dictionary
·noun One who transacts, performs, or conducts any business. ...
Webster's Dictionary of the English Language