Definition of Mazdaism in English:

Mazdaism

noun

another term for Zoroastrianism
‘The second gallery reflects religious diversity in Turkish history, pointing out the influence of Manichaeism, Christianity, Mazdaism and Buddhism on various Turkish peoples.’
another term for Zoroastrianism

Origin

Late 19th century from Avestan mazdā (short for Ahura Mazda) + -ism.

Pronunciation

Mazdaism

/ˈmazdəˌɪz(ə)m/