Zoroaster

/ˌzɒroʊˈæstər/

Learned borrowing from Latin Zōroastrēs, from Ancient Greek Ζωροάστρης (Zōroástrēs), from Avestan 𐬰𐬀𐬭𐬀𐬚𐬎𐬱𐬙𐬭𐬀 (zaraθuštra). Doublet of Zarathustra.

1An ancient Iranian prophet after whom the indigenous Iranian ethnic religion, Zoroastrianism, is named, also venerated in Mithraism.
2Pseudepigraphic name used by various Ancient Greek and Latin authors of late antiquity to lend weight to their opinions.