/ Dictionary / Index H heliotype: Meaning and Definition of Find definitions for: he•li•o•type Pronunciation: (hē'lē-u-tīp"), [key] — -typed, -typ•ing. collotype. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heliotype (Thesaurus) heliotropism heliozoan Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language