/ Dictionary / Index A ammonium carbamate: Meaning and Definition of Find definitions for: ammo'nium car'bamate Pronunciation: [key] — Chem. Chem. a white, crystalline, water-soluble, extremely volatile powder, CHNO, used as a fertilizer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ammonium binoxalate ammonium carbonate Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language