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单词 alum
释义

alum

enUK

al·um 1

A0234500 (ăl′əm)n. Any of various double sulfates of a trivalent metal such as aluminum, chromium, or iron and a univalent metal such as potassium or sodium, especially hydrous aluminum potassium sulfate, AlK(SO4)2·12H2O, widely used in industry as clarifiers, hardeners, and purifiers and medicinally as topical astringents and styptics.
[Middle English, from Old French, from Latin alūmen.]

a·lum 2

A0234550 (ə-lŭm′)n. Informal An alumna or alumnus.

alum

(ˈæləm) n1. (Elements & Compounds) Also called: potash alum a colourless soluble hydrated double sulphate of aluminium and potassium used in the manufacture of mordants and pigments, in dressing leather and sizing paper, and in medicine as a styptic and astringent. Formula: K2SO4.Al2(SO4)3.24H2O2. (Elements & Compounds) any of a group of isomorphic double sulphates of a monovalent metal or group and a trivalent metal. Formula: X2SO4.Y2(SO4)3.24H2O, where X is monovalent and Y is trivalent[C14: from Old French, from Latin alūmen]

alum

n informal chiefly US and Canadian an alumnus or alumna

al•um1

(ˈæl əm)

n. 1. a crystalline solid, aluminum potassium sulfate, K2SO4∙Al2(SO4)3∙24H2O, used as an astringent and styptic and in dyeing and tanning. 2. any of a class of analogous double sulfates. [1275–1325; Middle English < Anglo-French < Latin alūmen]

a•lum2

(əˈlʌm)
n. an alumna or alumnus. [by shortening]

alum.

aluminum.

al·um

(ăl′əm) Any of various crystalline salts in which a metal such as aluminum or chromium is combined with another metal such as potassium or sodium, especially aluminum potassium sulfate. Alum is widely used in industry as a hardener and purifier, and in medicine to induce vomiting and stop bleeding.
Thesaurus
Noun1.alum - a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminumammonia alum, ammonium alumAl, aluminium, aluminum, atomic number 13 - a silvery ductile metallic element found primarily in bauxitedouble salt - a solution of two simple salts that forms a single substance on crystallization
2.alum - a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminumpotash alum, potassium alumAl, aluminium, aluminum, atomic number 13 - a silvery ductile metallic element found primarily in bauxitedouble salt - a solution of two simple salts that forms a single substance on crystallization
3.alum - a person who has received a degree from a school (high school or college or university)alum - a person who has received a degree from a school (high school or college or university)alumna, alumnus, graduate, gradIvy Leaguer - a student or graduate at an Ivy League schoolold boy - a former male pupil of a schoolbookman, scholar, scholarly person, student - a learned person (especially in the humanities); someone who by long study has gained mastery in one or more disciplines
4.alum - a double sulphate of aluminum and potassium that is used as an astringent (among other things)astringent, astringent drug, styptic - a drug that causes contraction of body tissues and canals
Translations
στυπτηρίαallumareallume

alum

enUK

alum

 [al´um] a local astringent and styptic, prepared as an ammonium (ammonium a.) or potassium (potassium a.) compound; also used as an adjuvant in adsorbed vaccines and toxoids.

al·um

(al'ŭm), A double sulfate of aluminum and of an alkaline earth element or ammonium; chemically, an alum is any one of the markedly astringent double salts formed by a combination of a sulfate of aluminum, iron, manganese, chromium, or gallium with a sulfate of lithium, sodium, potassium, ammonium, cesium, or rubidium; used locally as a styptic. [L. alumen]

alum

(ăl′əm)n. Any of various double sulfates of a trivalent metal such as aluminum, chromium, or iron and a univalent metal such as potassium or sodium, especially hydrous aluminum potassium sulfate, AlK(SO4)2·12H2O, widely used in industry as clarifiers, hardeners, and purifiers and medicinally as topical astringents and styptics.

al·um

(al'ŭm) Agent used locally as a styptic. [L. alumen]

ALUM


AcronymDefinition
ALUMAluminum (old style)
ALUMAustralian Land Use and Management (classification system)
ALUMAgricultural Land Use Map (agriculture; various locations)

alum

enUK
  • noun

Synonyms for alum

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

Synonyms

  • ammonia alum
  • ammonium alum

Related Words

  • Al
  • aluminium
  • aluminum
  • atomic number 13
  • double salt

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

Synonyms

  • potash alum
  • potassium alum

Related Words

  • Al
  • aluminium
  • aluminum
  • atomic number 13
  • double salt

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

Synonyms

  • alumna
  • alumnus
  • graduate
  • grad

Related Words

  • Ivy Leaguer
  • old boy
  • bookman
  • scholar
  • scholarly person
  • student

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

Related Words

  • astringent
  • astringent drug
  • styptic
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