/ Dictionary / Index H Helios: Meaning and Definition of Find definitions for: He•li•os Pronunciation: (hē'lē-os"), [key] — n. the ancient Greek god of the sun, represented as driving a chariot across the heavens; identified by the Romans with Sol. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: helios (Thesaurus) Heliopolis helioscope 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