Definition & Meaning of "alum"in English

Alum

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

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

Grammatical Information

Animacy status

Inanimate

Composition

Simple

Countable

singular

not gender specific

Plural form

alums

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

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

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Lexical Tree

aluminous

alum

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