zarathustrianism Definition
the religion founded by the Persian prophet Zoroaster in the 6th century BC, which was the dominant religion of Iran until the Muslim conquest..
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Summary: zarathustrianism in Brief
Zarathustrianism [zar-uh-thuhs-tree-uh-niz-uhm] is the religion founded by the Persian prophet Zoroaster in the 6th century BC. It was the dominant religion of Iran until the Muslim conquest.