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Potash alum
noun
Definitions
Noun
- 1 alum, hydrated potassium aluminium sulphate, formula K₂SO₄.Al₂(SO₄)₃.24H₂O uncountable
- 2 a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum wordnet
Etymology
From potash + alum.
See also for "potash alum"
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