Medical Dictionary
5 ENTRIES FOUND:

alum

noun al·um \ˈal-əm\

Definition of ALUM

1
:  either of two colorless or white crystalline double sulfates of aluminum used in medicine internally as emetics and locally as astringents and styptics: a :  one KAl(SO4)2·12H2O that is a sulfate of aluminum and potassium—called also potassium alum b :  one consisting of an ammonium aluminum sulfate NH4Al(SO4)2·12H2O—called also ammonia alum, ammonium alum
2
:  any of various double salts isomorphous with potassium aluminum sulfate
March 27, 2015
quiescent Hear it
Tranquilly at rest or causing no trouble
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears