English-Thai Dictionary

potash

N ด่าง  potassium carbonate dang

 

Webster's 1828 Dictionary

POTASH

n.[pot and ashes. ] The popular name of vegetable fixed alkali in an impure state, procured from the ashes of plants by lixiviation and evaporation. The matter remaining after evaporation is refined in a crucible or furnace, and the extractive substance burnt off or dissipated. Refined potash is called pearlash. The plants which yield the greatest quantity of potash are wormwood and fumitory. By recent discoveries of Sir H. Davy, it appears that potash is a metallic oxyd; the metal is called potassium, and the alkali, in books of science, is called potassa.

 

Webster's 1913 Dictionary

POTASH

Pot "ash `, n. Etym: [Pot + ash. ] (Chem. )(a ) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash. (b ) The impure potassium carbonate obtained by leaching wood ashes, either as a strong solution (lye ), or as a white crystalline (pearlash ).

 

POTASHES

POTASHES Pot "ash `es, n. pl. (Chem. )

 

Defn: Potash. [Obs. ]

 

New American Oxford Dictionary

potash

pot ash |ˈpätˌaSH ˈpɑdˌæʃ | ▶noun an alkaline potassium compound, esp. potassium carbonate or hydroxide. ORIGIN early 17th cent.: from pot-ashes, from obsolete Dutch potasschen, originally obtained by leaching vegetable ashes and evaporating the solution in iron pots.

 

potash alum

pot ash al um ▶noun see alum 1.

 

Oxford Dictionary

potash

pot ¦ash |ˈpɒtaʃ | ▶noun [ mass noun ] an alkaline potassium compound, especially potassium carbonate or hydroxide. ORIGIN early 17th cent.: from pot-ashes, from obsolete Dutch potasschen, originally obtained by leaching vegetable ashes and evaporating the solution in iron pots.

 

potash alum

pot ¦ash alum ▶noun see alum 1.

 

Sanseido Wisdom Dictionary

potash

pot ash /pɑ́tæʃ |pɔ́t -/名詞 U 炭酸カリウム, 苛性 （かせい ）カリ 〘肥料などに使われる 〙.