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potash
Part of speech: NounA powerful white salt obtained from wood ashes and used in making soap, glass, etc.; potassium carbonate. Also, potass, potassa.
Usage examples "potash":- If a fixed alkaloid, treat the acid solution with soda or potash and ether, evaporate ethereal solution after separation, when the solid alkaloid will be left in an impure state. - "Aids to Forensic Medicine and Toxicology", W. G. Aitchison Robertson.
- Other countries have also developed supplies of potash, some of which will probably continue to produce even in competition with the deposits of recognized importance referred to above. - "The Economic Aspect of Geology", C. K. Leith.
- It may be said that, so far as the agricultural soils of the world are now known, only three of the essential plant- foods are likely to be absent, namely, potash, phosphoric acid, and nitrogen; of these, by far the most important is nitrogen. - "Dry-Farming", John A. Widtsoe.