Definition of Zoroaster in English:

Zoroaster

proper noun

  • (c.628–c.551 bc), Persian prophet and founder of Zoroastrianism; Avestan name Zarathustra. Little is known of his life, but traditionally he was born in Persia and began to preach the tenets of what was later called Zoroastrianism after receiving a vision from Ahura Mazda.

Pronunciation:

Zoroaster

/ˌzɒrəʊˈastə/