trans·act (tr?n-s?kt?, -z?kt?)v. trans·act·ed, trans·act·ing, trans·acts v.tr. To do, carry on, or conduct: transact business over the phone; transacting trade agreements.v.intr. To conduct business: transacting with foreign leaders.[Latin tr?nsigere, tr?ns?ct- : tr?ns-, trans- + agere, to drive, do; see ag- in Indo-European roots.]trans·ac?tor n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.transact (træn?zækt) vbto do, conduct, or negotiate (business, a deal, etc)[C16: from Latin tr?nsactus, from tr?nsigere, literally: to drive through, from trans- + agere to drive] trans?actor nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014trans?act (træn?sækt, -?zækt) v.t. 1. to carry on or conduct (business, negotiations, etc.) to a conclusion or settlement. v.i. 2. to carry on or conduct business, negotiations, etc. [1575?85;