/ Dictionary / Index L lead carbonate: Meaning and Definition of Find definitions for: lead' car'bonate Pronunciation: (led), [key] — Chem. Chem. a white crystalline compound, PbCO, toxic when inhaled, insoluble in water and alcohol: used as an exterior paint pigment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lead block lead chromate Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language