/ Dictionary / Index H Heliogabalus: Meaning and Definition of Find definitions for: He•li•o•gab•a•lus Pronunciation: (hē"lē-u-gab'u-lus), [key] — n. a.d. 204–222, Roman emperor 218–222. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heliodor heliogram Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language