The term “saltpeter” is a more common name for potassium nitrate, which is used to preserve meat and is found in toothpaste formulated for sensitive teeth. Saltpeter has been traditionally used to make fireworks, explosives, matches and fertilizers. The term “saltpeter” is derived from the Medieval Latin term “salpetra”, which stems from the term “sal” meaning “salt” and “petrae” meaning “rock” as saltpeter is literally found as an encrustation within rock...
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