Definition Definition

Alum - Meaning and Examples

Meaning of 'Alum' (Webster Dictionary)

1 . Alum [ n.]
- A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization.
2 . Alum [ v. t.]
- To steep in, or otherwise impregnate with, a solution of alum; to treat with alum.