a colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH 3 , usually produced by the direct combination of nitrogen and hydrogen gases

used chiefly for refrigeration and in the manufacture of commercial chemicals and laboratory reagents.

Also called ammonia solution , ammonia water , aqua ammoniae , aqua ammonia, aqueous ammonia. this gas dissolved in water; ammonium hydroxide.

noun

alkali , salts , spirits , vapor