A Dictionary of All Religions and Religious Denominations/Eutychians
EUTYCHIANS, a denomination in the fifth century, so called from Eutyches, abbot of a certain convent of monks at Constantinople, and the very opposite of the Nestorians. He maintained, that there was only one nature in Jesus Christ. The divine nature, according to them, had so entirely swallowed up the human, that he latter could not be distinguished; so that it was inferred our Lord had nothing of humanity but the appearance. See Jacobites.
Eutychus began to propagate his opinions about the year 448, when he was rather advanced in years, and they were immediately condemned by a synod held by Flavian at Constantinople; the next year, they were justified by the council of Ephesus, and again condemned two years after by the council of Caledon; such is the fallibility of human nature!
- Mosheim, vol. i. p. 413.