alum




Definitions of alum
  1. noun

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

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    type of:

    astringent, astringent drug, styptic

    a drug that causes contraction of body tissues and canals

  2. noun

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

    synonyms:
    potash alum, potassium alum
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    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

  3. noun

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

    synonyms:
    ammonia alum, ammonium alum
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    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

  4. noun

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

    synonyms:
    alumna, alumnus, grad, graduate
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    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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