Word Study
heresiarch
CIDE DICTIONARY
heresiarch, n. [L. haeresiarcha, Gr. ; heresy + leader, to lead: cf. F. hérésiarque.].
A leader in heresy; the chief of a sect of heretics. Bp. Stillingfleet. [1913 Webster]
OXFORD DICTIONARY
heresiarch, n. the leader or founder of a heresy.
Etymology
eccl.L haeresiarcha f. Gk hairesiarkhes (as HERESY + arkhes ruler)
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