What does alum mean or Definition?

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List of meaning for alum

a chemical substance containing aluminum used in dye things or to make the skin tighter

alum, ammonia alum, ammonium alum(noun)

a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum

alum, potassium alum, potash alum(noun)

a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum

alumnus, alumna, alum, graduate, grad(noun)

a person who has received a degree from a school (high school or college or university)

alum(noun)

a double sulphate of aluminum and potassium that is used as an astringent (among other things)

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