/ Dictionary / Index H hGH: Meaning and Definition of Find definitions for: hGH Pronunciation: [key] human growth hormone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. HG hgt. Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language