the mysteries, celebrated annually at Eleusis and Athens in ancient times, in memory of the abduction and return of Persephone and in honor of Demeter and Bacchus.
Origin of Eleusinian mysteries
First recorded in 1635–45
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British Dictionary definitions for eleusinian mysteries
a mystical religious festival, held in September at Eleusis in classical times, in which initiates celebrated Persephone, Demeter, and Dionysus
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