ammonium

/ษ™หˆmoสŠni.ษ™m/

IPA: /AH0 M OW1 N IY0 AH0 M/

noun
  1. 1

    The univalent NH4+ cation, derived by the protonation of ammonia

  2. 2

    (especially in combination) Any similar cation formed by replacing one or more hydrogen atoms with alkyl or aryl radicals

Source: https://en.wiktionary.org/wiki/ammonium