Definition of Osirism in US English:

Osirism

noun

  • In ancient Egypt: the cult or ritual associated with Osiris.

Origin

Early 19th century; earliest use found in George Faber (1773–1854), Church of England clergyman and religious writer. From the name of Osiris + -ism.

Pronunciation

Osirism

/ə(ʊ)ˈsʌɪərɪz(ə)m/