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Ammonia
01
a sharp-smelling gas made of nitrogen and hydrogen
Examples
Ammonia has a strong, sharp odor that can irritate the eyes and throat.
Industrial plants produce ammonia on a large scale for fertilizers.
02
a solution of ammonia gas dissolved in water, commonly called aqueous ammonia
Examples
The farmer applied ammonia to the soil to provide nitrogen.
Aqueous ammonia is less pungent than gaseous ammonia.
