/ Dictionary / Index D Dionysiac: Meaning and Definition of Find definitions for: Di•o•nys•i•ac Pronunciation: (dī"u-nis'ē-ak", -nī'sē-), [key] — adj. of or pertaining to the Dionysia or to Dionysus; Bacchic. Dionysian (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Dionysia Dionysian Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language