Other Definitions
alum (enc)
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Alum| Noun | 1. | alum - a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminumdouble salt - a solution of two simple salts that forms a single substance on crystallization | | | 2. | alum - a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminumdouble salt - a solution of two simple salts that forms a single substance on crystallization | | | 3. | alum - a person who has received a degree from a school (high school or college or university)Ivy Leaguer - a student or graduate at an Ivy League school old boy - a male ex-pupil of a school scholar, scholarly person, student - a learned person (especially in the humanities); someone who by long study has gained mastery in one or more disciplines | | | 4. | alum - a double sulphate of aluminum and potassium that is used as an astringent (among other things) | |
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