something that is transacted, especially a business agreement.
4.
Psychology. an interaction of an individual with one or more other persons, especially as influenced by their assumed relational roles of parent, child, or adult.
5.
transactions, the published records of the proceedings, as papers read, addresses delivered, or discussions, at the meetings of a learned society or the like.
Origin: 1425–75; late Middle English < Latin trānsāctiōn- (stem of trānsāctiō) completion, transaction. See transact, -ion
c.1460, "the adjustment of a dispute," from M.Fr. transaction, from L. transactionem (nom. transactio) "an agreement, accomplishment," from transactus, pp. of transigere "accomplish, drive or carry through," from trans- "through" + agere "to drive" (see act). Meaning "a piece