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noun
KNO3 Used especially as a fertilizer and explosive.
synonyms: niter, nitre, potassium nitrate, saltpeter.
is a specific kind of: nitrate.
is contained in: fertiliser, fertilizer, plant food.
derivation: azotic, nitric, nitrous.
Dutch: salpeter, kaliumnitraatPolish: saletra
Find more on saltpetre elsewhere: etymology - rhymes - Wikipedia.
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