Definition of heresiarch in English:

heresiarch

Line breaks: her¦esi|arch
Pronunciation: /hɛˈriːzɪɑːk
 
/

noun

The founder of a heresy or the leader of a heretical sect.
More example sentences
  • In its confrontation with heresiarchs, the Church learned to read the Scriptures in a way that should still inform us today.
  • So will there be wars of religion between orthodox Anglicans and heresiarchs in the break-away communions of North America?
  • When the convocation met there were a great many sermons preached by various learned and eloquent divines, but nothing was produced which was pronounced by the general voice a satisfactory answer to the doctrines of the heresiarch.

Origin

mid 16th century: via ecclesiastical Latin from ecclesiastical Greek hairesiarkhēs 'leader of a sect', from hairesis 'heretical sect, heresy' + arkhēs 'ruler'.

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Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence