/ Dictionary / Index D Dionysius: Meaning and Definition of Find definitions for: Di•o•ny•si•us Pronunciation: (dī"u-nish'ē-us, -nis'-, -nish'us, -nī'sē-us), [key] — n. (“the Elder”) 431?–367 b.c., Greek soldier: tyrant of Syracuse 405–367. died a.d. 268, pope 259–268. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dionysius (Thesaurus) Dionysian Dionysius Exiguus 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