Definition of heterodox

• a. - 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., esp. upon theological subjects.
• a. - Holding heterodox opinions, or doctrines not orthodox; heretical; -- said of persons.
• n. - An opinion opposed to some accepted standard.