potash: [17] Potassium carbonate was originally obtained by burning wood or other vegetable matter, soaking the ashes in water, and evaporating the resulting liquid in iron pots. The resulting substance was hence called in early modern Dutch potasschen, literally ‘pot ashes’, and the word was adopted into English as potash. From it, or its French relative potasse, the chemist Sir Humphry Davy coined in 1807 the term potassium for the metallic element which occurs in potash. => ash, pot, potassium
potash (n.)
1751, earlier -pot-ashes (1640s), a loan-translation of older Dutch potaschen, literally "pot ashes" (16c.); so called because it was originally obtained by soaking wood ashes in water and evaporating the mixture in an iron pot. Compare German Pottasche, Danish potaske, Swedish pottaska, all also from Dutch. See also potassium. French potasse (1570s), Italian potassa are Germanic loan-words. The original plural was pot-ashes.
实用例句
1. In Alberta people mine and drill for oil, potash, petrol and gas.
在亚伯达,人们采矿、打井开采石油 、 碳酸钾 、 汽油和天然气.
来自英语晨读30分（高一）
2. The most important use of potash is in fertilizer.
钾盐的最重要的用途是作肥料.
来自辞典例句
3. Potash production in the United States was not developed until World War I.
一直到第一次世界大战时美国苛性钾的生产才扩大开来.
来自辞典例句
4. The thermal dissociation of the potassium shale - potash system has been experimentally investigated.
通过实验探讨了富钾页岩+碳酸钾体系热分解反应过程.
来自互联网
5. One simple way to make soft soap requires nine kilograms of potash.
