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or mith·rae·um (mĭth′rē-əm)
n. pl. Mith·rae·a (-rē-ə) or mith·rae·a
An often subterranean or semisubterranean temple dedicated to the worship of Mithras.

[New Latin, from Greek Mithraion, from Mithrās, Mithras; see Mithras.]
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.
References in periodicals archive ?
The New York City Section of the Illuminating Engineering Society (IESNYC) has conferred an Award Of Excellence on Tillotson Design Associates for its work lighting Bloomberg's European headquarters in London and for the London Mithraeum.
Remains of the Temple of Mithras in the London Mithraeum Bloomberg Space
"In some stages, it was used for burial purposes, but its shape and an archaeoastronomical analysis suggest that it was originally designed and built to contain a Mithraeum [temple to Mithras]," as explained to SINC by Inmaculada Carrasco, one of the authors of the study.
And as Joseph and Merriem listened to his words with earnest, wide-eyed curiosity, he began to describe the amazing Mithraeum, built underground in his native city, and went into such detail that the girl who had never been beyond the borders of Judea and her husband, who knew only about the gigantic above-ground structures of Egypt, almost saw before their eyes the huge temple of an enlarged cave, in which all the initiated, rich and poor, soldiers and city dwellers, partook equally--through the unifying mystery of the bread and the wine--of the most divine essence.
A typical mithraeum, an underground house of worship used by devotees of Mithras, was constructed to resemble a world-cavern, a metaphor of the cosmos favored in the ancient Middle East.
Apuleius Marcellus, with the adjacent Mithraeum. This connection allows for a non-satiric reading of the priest's names and even 'a signal to the divinity to which he had a personal allegiance' ('un cenno alla divinita alla quale era personalmente legato', 76) or at least a gesture towards contemporary religious syncretism.
On the bus to Ostia where the group is going to look at Roman ruins, an old synagogue and a Mithraeum, a temple dedicated to the Persian god of light, to get some idea of the rich syncretic stew that Christianity took root in, I ask Schenk if there is a conflict between feminism and Christianity.
Further, the iconographical evidence varies from mithraeum to mithraeum, sometimes as a result of interaction with the local culture but elsewhere for reasons less clear.
Nearby is the Mithraeum, which had been buried for more than 1,600 years before being discovered in 1949.