The use of acceptance tests in subsequent iterations is also known as regression testing. Acceptance testing is a key feature of test-driven development (TDD). In Scrum: Scrum does not specify testing methods, and testing is not a part of the Scrum framework.
Medical Definition of MALIGNANCY. 1. : the quality or state of being malignant.
Definition of malignant from the Collins English Dictionary Aspect When we use a verb, we often need to be able to refer to more than the time at which an event took place.