/ ˌdaɪəˈnɪziæk; NAmE / (also Dio·nys·ian ) /ˌdaɪəˈnɪziən/ adjective ( formal )
1.
relating to the ancient Greek god Dionysus
2.
relating to the physical senses and the emotions, especially when they are expressed without control
—compare Apollonian
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WORD ORIGIN
early 19th cent. (as a plural noun referring to the ancient Greek festivals of Dionysus): via late Latin from Greek Dionūsiakos relating to Dionysus, the Greek god, son of Zeus and Semele.