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Rarealum
The correct spelling is alum.
How to pronounce alum
/ˈæl.əm/
nounIPA: /ˈæl.əm/
Say it like: Alu-m
The correct spelling is alum. An astringent salt, usually occurring in the form of pale crystals, much used in the dyeing and tanning trade and in certain medicines, and now understood to be a double sulphat…
Usage Examples
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Meanings
noun
- 1.An astringent salt, usually occurring in the form of pale crystals, much used in the dyeing and tanning trade and in certain medicines, and now understood to be a double sulphate of potassium and aluminium (K2SO4·Al2(SO4)3·24H2O).
- 2.Any similar double sulphate in which either or both of the potassium and aluminium is wholly or partly replaced by other univalent or tervalent cations.
- 3.(shortening) A past attendee or graduate (of either gender) of a college, university or other educational institution.
verb
- 1.To steep in, or otherwise impregnate with, a solution of alum; to treat with alum.
Similar words
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