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alum

PRIMARY MEANINGS OF: alum

1
 n
a double sulphate of aluminum and potassium that is used as an astringent (among other things)
2
 n
a person who has received a degree from a school (high school or college or university)
FULL DEFINITIONS OF: alum
1

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

Type of:
astringent, astringent drug, styptic
a drug that causes contraction of body tissues and canals

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

Synonyms:
potash alum, potassium alum
Type of:
Al, aluminium, aluminum, atomic number 13
a silvery ductile metallic element found primarily in bauxite
double salt
a solution of two simple salts that forms a single substance on crystallization

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

Synonyms:
ammonia alum, ammonium alum
Type of:
Al, aluminium, aluminum, atomic number 13
a silvery ductile metallic element found primarily in bauxite
double salt
a solution of two simple salts that forms a single substance on crystallization
2

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

Synonyms:
alumna, alumnus, grad, graduate
Types:
Ivy Leaguer
a student or graduate at an Ivy League school
old boy
a former male pupil of a school
Type of:
bookman, scholar, scholarly person, student
a learned person (especially in the humanities); someone who by long study has gained mastery in one or more disciplines
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