n. [ L. haeresiarcha, Gr. &unr_;; &unr_; heresy + &unr_; leader, &unr_; to lead: cf. F. hérésiarque. ] A leader in heresy; the chief of a sect of heretics. Bp. Stillingfleet. [ 1913 Webster ]
n. A chief or great heresy. [ R. ] [ 1913 Webster ]
The book itself [ the Alcoran ] consists of heresiarchies against our blessed Savior. Sir T. Herbert. [ 1913 Webster ]