HyperDic: ammonium_alum

English > 1 sense of the expression ammonium alum:
NOUNsubstanceammonium alum, alum, ammonia aluma white crystalline double sulfate of aluminum
English > ammonium alum: 1 sense > noun 1, substance
MeaningA white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum.
Synonymsalum, ammonia alum
Broaderaluminum, aluminium, Al, atomic number 13A silvery ductile metallic element found primarily in bauxite
double saltA solution of two simple salts that forms a single substance on crystallization
Spanishaluminio amónico

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