Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Alum" Definition
noun
Any of various double sulfates of a trivalent metal such as aluminum, chromium, or iron and a univalent metal such as potassium or sodium, especially aluminum potassium sulfate, AlK(SO4)2·12H2O, widely used in industry as clarifiers, hardeners, and purifiers and medicinally as topical astringents and styptics.
Source: American Heritage Dictionary
Informal An alumna or alumnus.
Source: American Heritage Dictionary
A potassium sulfate KAl(SO)·12HO or an ammonium aluminum sulfate NHAl(SO)·12HO used especially as an emetic and as an astringent and styptic.
Source: Merriam-Webster
Any of various double salts isomorphous with potassium aluminum sulfate.
Source: Merriam-Webster