What does Zoroastrianism mean?
• ZOROASTRIANISM (noun) The noun ZOROASTRIANISM has 1 sense: 1. system of religion founded in Persia in the 6th century BC by Zoroaster; set forth in the Zend-Avesta; based on concept of struggle between light (good) and dark (evil) Familiarity information: ZOROASTRIANISM used as a noun is very rare.