WordReference Random House Unabridged Dictionary of American English © 2026
ammo′nium hydrox′ide, [Chem.]
  1. Chemistrya basic compound, NH4OH, existing only in solution, formed by dissolving ammonia gas in water. Cf. ammonia. 
  • 1900–05

Collins Concise English Dictionary © HarperCollins Publishers::
ammonium hydroxide n
  1. a compound existing only in aqueous solution, formed when ammonia dissolves in water to form ammonium ions and hydroxide ions. Formula: NH4OHAlso called: aqueous ammonia
'ammonium hydroxide' also found in these entries (note: many are not synonyms or translations):
ammonia - spirits of hartshorn - ammonium salt

Forum discussions with the word(s) "ammonium hydroxide" in the title:


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