Definitions of ammonia is:
uncountable noun ammonia
Ammonia is a colourless liquid or gas with a strong, sharp smell. It is used in making household cleaning substances.
a colourless pungent highly soluble gas mainly used in the manufacture of fertilizers, nitric acid, and other nitrogenous compounds, and as a refrigerant and solvent. Formula: NH3
a solution of ammonia in water, containing the compound ammonium hydroxide
Other words based on ammonia: