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Từ điển WordNet v3.1 - WordNet Dictionary
alum



noun
1. a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
Syn:
ammonia alum, ammonium alum
Hypernyms:
aluminum, aluminium, Al, atomic number 13, double salt
2. a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum
Syn:
potassium alum, potash alum
Hypernyms:
aluminum, aluminium, Al, atomic number 13, double salt
3. a person who has received a degree from a school (high school or college or university)
Syn:
alumnus, alumna, graduate, grad
Derivationally related forms:
graduate (for: graduate)
Hypernyms:
scholar, scholarly person, bookman, student
Hyponyms:
Ivy Leaguer, old boy
4. a double sulphate of aluminum and potassium that is used as an astringent (among other things)
Hypernyms:
astringent, astringent drug, styptic

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