Of or pertaining to creeds, beliefs, or teachings, especially religious ones, that are different from the norm ('orthodox'), but not sufficiently different to be called heretical
The Church of Alexandria in Egypt is considered heterodox, not heretical.
Contrary to, or differing from, some acknowledged standard, as the Bible, the creed of a church, the decree of a council, and the like; not orthodox; heretical; said of opinions, doctrines, books, etc
Heterodox beliefs, opinions, or ideas are different from the accepted or official ones. = unorthodox. heterodox beliefs, practices etc are not approved of by a particular group, especially a religious one
{s} unorthodox, different from commonly held beliefs or doctrines (especially pertaining to religion); holding an unorthodox belief or doctrine
of or pertaining to creeds, beliefs, or teachings, especially religious ones, that are different from the norm (orthodox), but not sufficiently different to be called heretical