a member of a dualistic sect, flourishing chiefly in Bulgaria in the Middle Ages, that rejected most of the Old Testament and was strongly anticlerical in polity.
1840-45; < Medieval GreekBogómilos, from the name of a 10th cent. Bulgarian priest alleged to have founded the sect, in later South Slavic sources Bogomilŭ (a calque of GreekTheóphilos; see theo-, -phile)