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potassium nitrate
noun
, Chemistry.
- a crystalline compound, KNO 3 , produced by nitrification in soil, and used in gunpowders, fertilizers, and preservatives; saltpeter; niter.
potassium nitrate
noun
- a colourless or white crystalline compound used in gunpowders, pyrotechnics, fertilizers, and as a preservative for foods, esp as a curing salt for ham, sausages, etc ( E252 ). Formula: KNO 3 Also calledsaltpetrenitre
potassium nitrate
- A transparent, white, crystalline compound and strong oxidizing agent. It is used in gunpowder and fireworks, in making glass, and in fertilizer. Also called saltpeter. Chemical formula: KNO 3 .
- See also niter
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Word History and Origins
Origin of potassium nitrate1
First recorded in 1880–85
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