Which term defines a well-tested, scientifically supported statement that explains how something works?

The term scientific theory indicates the well supported statement, which explain the working of any phenomenon.

The Scientific theory is determined after experimenting about a particular hypothesis. The scientific theory have the proper explanation about the phenomenon, why it and how it occurs. There are no guesses or idea in the theory, and the experimentation done to establish a theory are replicatable (repeatable) and produce same results all the time.