The Collaborative International Dictionary of English v.0.48:

Cacodoxy \Cac"o*dox`y\, n. [Gr. ????????? perverted opinion;
   kako`s bad + ????? opinion.]
   Erroneous doctrine; heresy; heterodoxy. [R.]
   [1913 Webster]

         Heterodoxy, or what Luther calls cacodoxy. --R.
                                                  Turnbull.
   [1913 Webster]