Answer;
An educated guess that can be consistently testable
Explanation;
-A scientific theory is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed, preferably using a written, pre-defined, protocol of observations and experiments.
-A theory is the result of testing a hypothesis and developing an explanation that is assumed to be true about something. A theory is always backed by evidence; a hypothesis is only a suggested possible outcome, and is testable and falsifiable.