Meaning Of The Word Alum
What's the definition of Alum? Find Alum meanings, definitions and more at the Real Dictionary online.
Alum Meaning
| Alum Definition |
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What's The Definition Of Alum?
alum
countable noun: An alum is the same as an alumnus. alum in American English 1 a double sulfate of a monovalent metal or radical (as sodium, potassium, or ammonium) with a trivalent metal (as aluminum, iron, or chromium): it is used as an astringent, as an emetic, and in the manufacture of baking powders, dyes, and paper: the common noun: a crystalline solid, aluminum potassium sulfate, K2SO4⋅Al2(SO4)3⋅24H2O, used in medicine as an astringent and styptic, in dyeing and tanning, and in many technical processes alum in American English 2 an alumnus or alumna noun: an alumna or alumnus alum in British English 1 noun: a colourless soluble hydrated double sulphate of aluminium and potassium used in the manufacture of mordants and pigments, in dressing leather and sizing paper, and in medicine as a styptic and astringent. Formula: K2SO4.Al2(SO4)3.24 H2 O alum in British English 2 noun: an alumnus or alumna alum. in American English abbreviation: aluminum |
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