Becoming operational implies that a system is ready to function as intended. There are several synonyms for the term "become operational". These include "start up", "activate", "initiate", "launch", "commence", "begin", and "set in motion". All these terms describe the moment when a system, mechanism, or process transitions from a non-functional state to a functional one. Such a moment is crucial in industries such as aviation, manufacturing, and technology where systems must be tested to ensure they are safe and efficient to use. In summary, becoming operational is an important milestone that indicates a system is prepared to deliver its intended results.