transaction
n. countablen. an instance of buying or selling something, or the process of exchanging money for goods and services. It can also mean any piece of business that is completed between two people or systems.
n. an instance of buying or selling something; a business deal or exchange. In a technical context, it refers to a sequence of information exchange that is treated as a single unit of work.
The bank charges a small fee for every transaction.
The online system records every transaction automatically to ensure that no financial data is lost during the checkout process.
Modern database management relies on the atomicity of each transaction, ensuring that either the entire operation succeeds or no changes are applied to the ledger at all.
Borrowed from Middle French transaction, from Old French transaccion, from Late Latin transactio.
Commonly used with the verbs 'conduct', 'complete', or 'process'.