potash

名词 potash:

1. a potassium compound often used in agriculture and industry
   同义词：caustic potash, potassium hydroxide

pot.ash

n.（名词）
See potassium carbonate
参见 potassium carbonate
See potassium hydroxide
参见 potassium hydroxide
Any of several compounds containing potassium, especially soluble compounds such as potassium oxide, potassium chloride, and various potassium sulfates, used chiefly in fertilizers.
钾盐：一种含钾的化合物，尤指如下可溶性化合物：氧化钾、氟化钾以及各种硫酸钾。这些化合物主要用于化肥中

来源：
Sing. of obsolete pot ashes
废语 pot ashes的单数
translated from obsolete Dutch potaschen [from the fact that this substance was originally obtained by leaching wood ashes and evaporating the leach in a pot]
由 已废荷兰语 potaschen翻译而来 [其得名原因是因为这种物质最初是通过过滤木灰然后将木灰放在锅中进行蒸发而得的]