Definicija: Formal testing conducted to enable a user, customer, or other authorized entity to determine whether to accept a product or product component.
Definicija: also called beta testing, application testing, and end user testing - is a phase of software development in which the software is tested in the "real world" by the intended audience.
Vir definicije: https://searchsoftwarequality.techtarget.com/definition/user-acceptance-testing-UAT