Orthodoxy
Etymology
From Greek "orthos," "straight" or "correct," and "doxa," "opinion" or "belief." The compound means, literally, "correct opinion." It entered English through religious controversy, distinguishing approved teaching from deviation, and now applies to any field — economic, scientific, political — where a dominant view sets the default and defines its own dissenters.
noun · /OR-thuh-dok-see/
Adherence to accepted or officially approved belief, especially within a religion, discipline, or ideology.
What it names
The reigning consensus — the set of views you can hold without having to defend them, which is exactly why it deserves periodic scrutiny.
Example
Questioning the reigning orthodoxy on the subject was a reliable way to not get published.
Related idea
Orthodoxy is the accepted position; heresy is the label it pins on those who choose otherwise, so the two terms are minted from the same act of drawing a line.