Ahura Mazda's adversary, the chief spirit of darkness and evil in Zoroastrianism.
[Persian ahriman, from Middle Persian ahraman, from Avestan aŋrō mainiiuš, the evil spirit : aŋra-, evil; akin to Sanskrit asra-, painful (both Avestan and Sanskrit, from Proto-Indo-Iranian *asra-, of unknown origin) + mainiiuš, spirit; see men-1 in the Appendix of Indo-European roots.]
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