In the context of pseudoscience and pathological science, is there a definition for the term "threshold interactions"?

"It refers to a phenomenon in statistical analysis where unforeseen relationships between input variables may cause unanticipated results."

I was searching for the same info and came across the above definition in the "Notes" section of the Wikipedia article on Pathological Sciences.

Based on the context in which I've seen the phrase "threshold interactions" used (in articles on the subjects of Cold Fusion and other pathological sciences) the above definition rings true to me.