noun
- a positively charged ion (NH4+) formed when ammonia combines with hydrogen, commonly found in fertilizers and cleaning products
Usage: chemistry
Examples
- Ammonium nitrate is widely used as a nitrogen fertilizer.
- The soil test showed high levels of ammonium in the garden.
- Ammonium chloride is used in some cough medicines.
- Plants can absorb nitrogen in the form of ammonium ions.
- The cleaning solution contained ammonium hydroxide.
- Ammonium sulfate helps lower soil pH for acid-loving plants.