/ Dictionary / Index G GHA: Meaning and Definition of Find definitions for: GHA Pronunciation: [key] Greenwich hour angle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. GH ghain Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language