Thesaurus: alum

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1. n. A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization.
2. v. t. To steep in, or otherwise impregnate with, a solution of alum; to treat with alum.
3. n. a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
4. n. a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
5. n. a double sulphate of aluminum and potassium that is used as an astringent (among other things)
6. n. a person who has received a degree from a school (high school or college or university)
7. A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization. Note: Common alum is the double sulphate of aluminium and potassium. It is white, transparent, very astringent, and crystallizes easily in octahedrons. The term is extended so as to include other double sulphates similar to alum in formula. To steep in, or otherwise impregnate with, a solution of alum; to treat with alum. Ure.
8. A double sulphate formed of aluminium and some other element(esp. an alkali metal) or of aluminium. It has twenty-four moleculesof water of crystallization.
9. n:100 n. a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum n. a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum n. a double sulphate of aluminum and potassium that is used as an astringent (among other things)