alum.
1. m. double sulfate of potash and alumina: astringent and white salt found in some rocks and land, from which is extracted by dissolution and crystallization. It is used to clarify the murky waters; serves as a mordant in dyeing and caustic in medicine after calcined.
1. m. The ferrous which crystallizes in the form of feather-like filaments.
charcoal, or alum zucarino.1. m. artificial mixture of alum and sugar, which is used in medicine as an astringent remedy.
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