| NOUN | substance | potassium alum, alum, potash alum | a white crystalline double sulfate of aluminum |
|---|
| Meaning | A white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum. | |
|---|---|---|
| Synonyms | alum, potash alum | |
| Broader | aluminum, aluminium, Al, atomic number 13 | A silvery ductile metallic element found primarily in bauxite |
| double salt | A solution of two simple salts that forms a single substance on crystallization | |
| Spanish | alumbre | |
| Catalan | alum | |
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