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Related to Mithraist: Zoroastrianism
A religion based on the worship of Mithras that was especially popular among the Roman military and a strong rival to Christianity during the late Roman Empire.
Mith·ra′ic (mĭ-thrā′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.