The writing or study of descriptions about heresies, or a written account of heretical beliefs and movements.
From Greek hairesis (heresy, sect) + graphia (writing, description). Emerged as an academic discipline in theological scholarship during the medieval period, designating systematic written treatments of unorthodox religious positions.
Heresiography is one of history's most paradoxical fields—the church funded detailed accounts of heresies partly to refute them, but in doing so, preserved the very ideas they wanted to suppress.
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