/ Dictionary / Index G gallic acid: Meaning and Definition of Find definitions for: gal'lic ac'id Pronunciation: [key] — Chem. Chem. a white or yellowish, crystalline, sparingly water-soluble solid, CHO, obtained from nutgalls, used chiefly in tanning and in ink dyes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gallic Gallican 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