ammonium hydroxide ammonium hydrosulphide • ammonium ion · · · Info · Definitions · Synonyms · Characters · · ammonium hydroxide · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) a water solution of ammonia. Synonyms: ammonia water, ammonia, ammonium hydroxide. · · Noun Definition 1 Synonyms · · · ammonia water · · Synonym 1 ammonia · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075 x latin small letter x U+0078 y latin small letter y U+0079