Synonyms and Antonyms for alum

1. alum (n.)

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

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2. alum (n.)

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

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3. alum (n.)

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

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4. alum (n.)

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

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