- Soundness of faith; a belief in the doctrines taught in the Scriptures, or in some established standard of faith; — opposed to heterodoxy or to heresy.
- Consonance to genuine Scriptural doctrines; — said of moral doctrines and beliefs; as, the orthodoxy of a creed.
- By extension, said of any correct doctrine or belief.
From the Slate article:
"... For much of the last 14 centuries, some 90 percent of the world's Muslims for whom Arabic is not a primary language had to depend on Islam's clergy—all of them men, as women are not allowed to enter the clergy—to define the meaning and message of the Quran for them, much as pre-Reformation Christians had to rely on priests to read them the Bible, which at the time was available only in Latin. ..."
From the book:
"Since nutrients, as compared to foods, are invisible and therefore slightly mysterious, it falls to scientists ... to explain the hidden reality of foods to us. In form this is a quasireligious idea, suggesting the visible world is not the one that really matters, which implies the need for a priesthood. For to enter a world where your dietary salvation depends on unseen nutrients, you need plenty of expert help."
If I wasn't so overtired I'd probably be able to discuss the underlying relationship better. However, Dorothy's teething.
(And how is it that when I was younger I used to be better at explaining things when I was tired?)