/ Dictionary / Index O oxalic: Meaning and Definition of Find definitions for: ox•al•ic Pronunciation: (ok-sal'ik), [key] — adj. Chem. of or derived from oxalic acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oxalate oxalic acid Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language