/ Dictionary / Index G geocorona: Meaning and Definition of Find definitions for: ge•o•co•ro•na Pronunciation: ( jē"ō-ku-rō'nu), [key] — n. a belt of ionized hydrogen surrounding the earth at the outer limit of the exosphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. geocode geod. Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language