MithraismPronunciation: /ˈmɪθrəˌɪz(ə)m, ˈmɪθreɪ-/Definition of Mithraism noun [mass noun] the cult of the god Mithras, which became popular among Roman soldiers of the later empire, and was the main rival to Christianity in the first three centuries ad. Derivatives MithraicPronunciation: /-ˈθreɪɪk/ adjective Mithraist noun Mithraism in other Oxford dictionaries Definition of Mithraism in the US English dictionary
