- nouna white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
* * *noun: alum 1b
* * *Chem.
* * *ammonia alum,
Useful english dictionary. 2012.
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ammonia alum — n ALUM (1b) … Medical dictionary
ammonia alum — Chem. See aluminum ammonium sulfate. * * * … Universalium
alum — A double sulfate of aluminum and of an alkaline earth element or ammonium; chemically, an a. is any one of the markedly astringent double salts formed by a combination of a sulfate of aluminum, iron, manga … Medical dictionary
Alum — This article is about the chemical compound. For other uses, see Alum (disambiguation). Bulk alum Alum ( / … Wikipedia
alum — alum1 /al euhm/, n. Chem. 1. Also called potash alum, potassium alum. a crystalline solid, aluminum potassium sulfate, K2SO4·Al2(SO4)3·24H2O, used in medicine as an astringent and styptic, in dyeing and tanning, and in many technical processes. 2 … Universalium
alum carmine — noun : a red staining fluid composed of alum, carmine, ammonia, and water … Useful english dictionary
ammonium alum — noun a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum • Syn: ↑alum, ↑ammonia alum • Hypernyms: ↑aluminum, ↑aluminium, ↑Al, ↑atomic number 13, ↑double salt * * * … Useful english dictionary
al|um — al|um1 «AL uhm», noun. 1. a whitish mineral salt used in medicine and in dyeing; potash alum. A pencil of alum is sometimes used to stop the bleeding of a small cut. Formula: KAI(SO4)2•12H2O 2. a colorless, crystalline salt containing ammonia,… … Useful english dictionary
aluminum — noun a silvery ductile metallic element found primarily in bauxite (Freq. 5) • Syn: ↑aluminium, ↑Al, ↑atomic number 13 • Derivationally related forms: ↑aluminous, ↑aluminize, ↑aluminise … Useful english dictionary
atomic number 13 — noun a silvery ductile metallic element found primarily in bauxite • Syn: ↑aluminum, ↑aluminium, ↑Al • Derivationally related forms: ↑aluminous (for: ↑aluminum), ↑aluminize ( … Useful english dictionary