Dionysian (adj.) Look up Dionysian at Dictionary.com of or
pertaining to Dionysos, Greek god of wine and revelry,
identified with Roman Bacchus. His name is of unknown origin. Or
in reference to historical men named Dionysius such as the
tyrants of Syracuse and especially Dionysius Exiguus (see A.D.),
e.g. Dionysian period of 532 Julian years, when the moon phases
recur on the same days of the week.