İngilizce-Türkçe-Almanca sözlük

1. Şap.
2. i. şap. sap. şap. şap. şap. i. şap. şap. Şap (genel formül: R2SO4 R'2 (SO4)3, 24H20 olup burada R tek değerli ve R'de üç değerlidir). şap.
3.  şap.
4. sap.
5. şap.
6. şap.

Etymology : Middle English, from Middle French alum, alun, from Latin alumen
Pronunciation : 'a-l&m
Function : noun
Date : 14th century

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1. double sulfate (Chemistry). alum\al"um\ , v. t. to steep in, or otherwise impregnate with, a solution of alum; to treat with alum.alum \al"um\ , n. [oe. alum, alom, of. alum, f. alun, fr. l. alumen alum.] (chem.) a double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. it has twenty-four molecules of water of crystallization.note: common alum is the double sulphate of aluminium and potassium. it is white, transparent, very astringent, and crystallizes easily in octahedrons. the term is extended so as to include other double sulphates similar to alum in formula.
2. A double sulphate formed of aluminium and some other element or of aluminium.
3. It has twenty-four molecules of water of crystallization.
4. To steep in, or otherwise impregnate with, a solution of alum; to treat with alum. a double sulphate of aluminum and potassium that is used as an astringent a white crystalline double sulfate of aluminum: the potassium double sulfate of aluminum a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum.
5. a former student of a school, college etc (alumen). Inorganic compound, any of a class of hydrated double salts, usually consisting of aluminum sulfate, water of hydration (an essential part of the crystal makeup), and the sulfate of another element. The most important alums are those of potassium sulfate (potassium alum, or potash alum, K2SO4Al2(SO4)324H2O), ammonium sulfate, and sodium sulfate. Alums occur naturally in various minerals and can be prepared and purified by crystallization from their solutions. Most are white crystals with an astringent, acid taste. They are used as paper-sizing agents, flocculating agents in water treatment, mordants in dyeing, and in pickles, baking powder, fire extinguishers, and medicines.