/ Dictionary / Index G Gdn: Meaning and Definition of Find definitions for: Gdn Pronunciation: [key] guardian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gde. gDNA 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