The Collaborative International Dictionary of English v.0.48:
mithraic \mithraic\ mithraistic \mithraistic\adj. Of or pertaining to Mithraism. [WordNet 1.5]WordNet (r) 3.0 (2006):
mithraistic adj 1: of or relating to Mithraism or its god [syn: mithraic, mithraistic]