ammonia alum A minor • ammonia condenser · · · Info · Definitions · Synonyms · Characters · · ammonia alum · · Text Common · · Latin · · Scripts 12 · · Length Definitions · · · (noun) a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum. Synonyms: alum, ammonium alum. · · Noun Definition 1 Synonyms · · · ammonia water · · Synonym 1 ammonia · · Synonym 2 ammonium hydroxide · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F u latin small letter u U+0075