Definition of: transact

(trans·akt′, tranz-) v.t.
To carry through; accomplish; do.
—v.i. Rare To do business. [<L transactus, pp. of transigere drive through, accomplish <trans- through + agere drive, do]
—trans·ac′tor noun Synonyms: accomplish, act, conduct, do, negotiate, perform, treat. There are many acts that one may do, accomplish, or perform unaided; what he transacts is by means of or in association with others; one may do a duty, perform a vow, accomplish a task, but he transacts business, since that always involves the agency of others. To negotiate and to treat are likewise collective acts, but negotiate implies deliberation with adjustment of mutual claims and interests, while transact implies execution. Nations may treat of peace without result, but when a treaty is negotiated peace is secured; the citizens of the two nations are then free to transact business with one another.