ammonium C1 Topic:Science & Research US /əˈmoʊni.əm/ See IPA manual Freq #33102 Meanings 1 noun the ion NH4 derived from ammonia 2 noun The univalent NH₄⁺ cation, derived by the protonation of ammonia 3 noun Any similar cation formed by replacing one or more hydrogen atoms with alkyl or aryl radicals Thesaurus Synonyms 1 noun · the ion nh4 derived from... ammonium ion Word family Derived forms alkylammoniumammonianammonitrateammoniumlikeammoniumylbenzyldimethylhexadecylammoniumbisammoniumbutylammoniumcetyltriethylammoniumcetyltrimethylammoniumcuprammoniumcuproammonium Common collocations ammonium ion Noun + noun Etymology Etymology tree New Latin ammōniumbor. English ammonium From New Latin ammōnium. Equivalent to ammonia + -ium. Topics Science & Research External links Cambridge Dictionary Wiktionary Google Images # ammonium **Type:** Word **Level:** C1 **Part of speech:** noun **IPA (US):** /əˈmoʊni.əm/ **Frequency rank:** 33102 ## Meanings 1. the ion NH4 derived from ammonia 2. The univalent NH₄⁺ cation, derived by the protonation of ammonia 3. Any similar cation formed by replacing one or more hydrogen atoms with alkyl or aryl radicals ## Derived Forms - alkylammonium - ammonian - ammonitrate - ammoniumlike - ammoniumyl - benzyldimethylhexadecylammonium - bisammonium - butylammonium - cetyltriethylammonium - cetyltrimethylammonium - cuprammonium - cuproammonium ## Etymology Etymology tree New Latin ammōniumbor. English ammonium From New Latin ammōnium. Equivalent to ammonia + -ium. ## Topics - Science & Research markdown