/ Dictionary / Index H Heliochrome: Meaning and Definition of Find definitions for: He•li•o•chrome Pronunciation: (hē'lē-u-krōm"), [key] — Trademark. Trademark. a brand of photograph reproducing directly the natural colors of a subject. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heliocentric parallax heliodor Related Content Daily Word Quiz: drowsy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language