noun.
The condition or quality of being heterodox.
noun.
A heterodox opinion or doctrine.
The Century Dictionary and Cyclopedia
noun.
The quality or state of being heterodox: as, the heterodoxy of a doctrine, book, or person.
noun.
A heterodox belief or doctrine; a departure from an established standard or principle; a heresy.
the GNU version of the Collaborative International Dictionary of English
noun.
An opinion or doctrine, or a system of doctrines, contrary to some established standard of faith, as the Scriptures, the creed or standards of a church, etc.; heresy.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the quality of being unorthodox
noun.
any opinions or doctrines at variance with the official or orthodox position
Word Usage
"As a matter of fact, the orthodoxy of these Churches is what we call heterodoxy, since it rejects the Papal Infallibility, and the Papal Supremacy, the dogma of the Immaculate Conception, that of Purgatory, etc."