from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. One who originates or is the chief proponent of a heresy or heretical movement.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The founder of a heresy, or a major ecclesiastical proponent of such a heresy.

from the GNU version of the Collaborative International Dictionary of English

  • n. A leader in heresy; the chief of a sect of heretics.

from The Century Dictionary and Cyclopedia

  • n. A leader in heresy; an arch-heretic.


Late Latin haeresiarcha, from Late Greek hairesiarkhēs : Greek hairesis, sect; see heresy + Greek -arkhēs, -arch.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ecclesiastical Latin haeresiarcha, from ecclesiastical Medieval Greek ἁιρεσιαρχης (hairesiarkhēs) (“leader of a sect”), corresponding to heresy + -arch. (Wiktionary)



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