Definition of ammonium in English:

ammonium

Syllabification: am·mo·ni·um
Pronunciation: /əˈmōnēəm
 
/

noun

[as modifier] Chemistry
The cation NH4+, present in solutions of ammonia and in salts derived from ammonia.
More example sentences
  • Amides are hydrolysed to ammonium salts with catalysis by acids or alkalis.
  • The perchloric acid then neutralises the alkali ammonia forming crystals of ammonium perchlorate salt.
  • And it contained the inorganic salts manganese sulphate, potassium chloride and ammonium sulphate.

Origin

early 19th century: from ammonia + -ium.

Definition of ammonium in:

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