What is the meaning of alum?

noun

  • A white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum.
  • A white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum.
  • A person who has received a degree from a school (high school or college or university.
  • A double sulphate of aluminum and potassium that is used as an astringent (among other things. ).
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). alum. Retrieved September 20, 2026, from http://smartdefine.org/alum/definitions/1201168
ChicagoWordNet. 2010. "alum" http://smartdefine.org/alum/definitions/1201168 (accessed September 20, 2026).
HarvardWordNet 2010, alum, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/alum/definitions/1201168>.
MLAWordNet. "alum" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/alum/definitions/1201168>
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