noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The univalent NH₄⁺ cation, derived by the protonation of ammonia uncountable, usually
2. 2
   the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion wordnet
3. 3
   Any similar cation formed by replacing one or more hydrogen atoms with alkyl or aryl radicals especially, in-compounds, uncountable, usually

Synonyms

All synonyms

ammonium ionmersa matruh

Example

More examples

"Ammonium carbonate is an organic compound."

Etymology

From New Latin ammōnium. Equivalent to ammonia + -ium.

Related phrases

ammonium acetateammonium bicarbonateammonium bisulfateammonium carbamateammonium carbonateammonium chlorideammonium hydroxideammonium imineammonium laureth sulfateammonium nitrateammonium phosphateammonium phosphatide

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.