/ Dictionary / Index G geode: Meaning and Definition of Find definitions for: ge•ode Pronunciation: ( jē'ōd), [key] — n. a hollow concretionary or nodular stone often lined with crystals. the hollow or cavity of this. any similar formation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: geode (Thesaurus) geod. geodesic 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