n.
- A carbonate of ammonium, (NH4)2CO3.
- The white, crystalline double salt of ammonium bicarbonate and ammonium carbamate, NH4HCO3·NH2COONH4, produced commercially and used in smelling salts and baking powder.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.