alum stone definition

  • noun:
    • A subsulphate of alumina and potash; alunite.
    • A subsulphate of alumina and potash; alunite.
  • others:
    • A subsulphate of alumina and potash; alunite.
    • A subsulphate of alumina and potash; alunite.

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  • Definition for "alum stone"
    • A subsulphate of alumina and potash; alunite.
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