There isn't a specific term for a scientific theory that is generally accepted by an overwhelming number of scientists. However, you can use several terms to describe such a theory:

* Well-established theory: This emphasizes the strong evidence and widespread consensus supporting the theory.

* Mainstream theory: This highlights that the theory is the dominant view within the scientific community.

* Scientific consensus: This focuses on the agreement among scientists on the theory's validity.

* Paradigm: This term, from Thomas Kuhn's work on scientific revolutions, describes a dominant framework for understanding a particular area of science.

It's important to note that even well-established scientific theories are still subject to revision and refinement as new evidence emerges. Science is a constantly evolving process, and what is considered a mainstream theory today could be modified or replaced in the future.