transacˈtion noun

1. The act of transacting
2. An agreement
3. A piece of business performed
4. (pl) the reports or publications of certain learned societies

transacˈtional adjective

transacˈtionally adverb

transacˈtor noun

transactional analysis noun (psychology)

A form of psychotherapy based on the concept of three ‘ego-states' of child, adult and parent existing in any one personality, and aimed at adjusting the balance between them, esp so as to improve the patient's interpersonal relations

transaction processing noun (computing)

The use of an online computer to interrogate or update files in real time