A more thorough explanation:

Definition: Operational is an adjective that describes something that is able to function or is currently functioning. It can also refer to something that is ministerial, meaning it involves carrying out administrative or routine tasks.

• The factory is now operational after undergoing renovations.
• The new software is not yet operational, as it is still being tested.
• The operational duties of the receptionist include answering phone calls and greeting visitors.

The first two examples illustrate the first definition of operational, which refers to something that is able to function or is currently functioning. In the first example, the factory has completed its renovations and is now able to function. In the second example, the software is not yet operational because it is still being tested and is not yet able to function.

The third example illustrates the second definition of operational, which refers to something that involves carrying out administrative or routine tasks. In this case, the receptionist's operational duties include tasks that are routine and necessary for the smooth operation of the office.