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Definition of Ammonium
1. Noun. The ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion.
Definition of Ammonium
1. n. A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.
Definition of Ammonium
1. Noun. (inorganic chemistry) The univalent NH4+ cation, derived by the protonation of ammonia. ¹
¹ Source: wiktionary.com
Definition of Ammonium
1. a univalent chemical radical [n -S]
Medical Definition of Ammonium
1.