Ahura Mazda's antagonist who is a spirit of darkness and evil in Zoroastrianism.
In Zoroastrianism, the supreme evil spirit, lord of the darkness and death, waging war with his counterpart Ahura Mazda (Ormuzd) until a time when human beings choose to lead good lives and Ahriman is finally destroyed.
The spirit of evil in Zoroastrianism; arch rival of Ormazd.