What does Alum mean?

Alum meaning in General Dictionary

To steep in or otherwise impregnate with an answer of alum to treat with alum

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  • A double sulphate formed of aluminium and some various other element esp an alkali material or of aluminum This has twenty-four particles of liquid of crystallization
  • a white crystalline double sulfate of aluminum: the ammonium dual sulfate of aluminum
  • a white crystalline two fold sulfate of aluminum: the potassium dual sulfate of aluminum
  • a person who has gotten a degree from a school (high-school or college)
  • a double sulphate of aluminum and potassium that is used as an astringent (among other items)
  • a two fold sulphate formed of aluminum and some other element (esp. an alkali metal) or of aluminium. It's twenty-four particles of liquid of crystallization.
  • To steep in, or else impregnate with, a remedy of alum; to deal with with alum.

Alum meaning in Etymology Dictionary

belated 14c., "whitish mineral sodium made use of as an astringent, dye, etc.," from Old French alum, from Latin alumen "alum," actually "bitter sodium," cognate with Greek aludoimos "bitter" and maybe with English ale.


Alum meaning in Symbols Dictionary

An old alchemical sign for alum or alumen.


Alum meaning in General Dictionary

(letter.) A double sulphate formed of aluminium and some various other element (esp. an alkali steel) or of aluminium. It has twenty-four molecules of water of crystallization.

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  • (v. t.) To steep in, or perhaps impregnate with, an answer of alum; to take care of with alum.

Sentence Examples with the word Alum

P. Granville put into practice between Alum Bay in the Isle of Wight and the Needles lighthouse a method which depends upon conduction through sea water.

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