/ Dictionary / Index H heliogram: Meaning and Definition of Find definitions for: he•li•o•gram Pronunciation: (hē'lē-u-gram"), [key] — n. a message sent by a heliograph. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heliogram (Thesaurus) Heliogabalus heliograph 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