Potassium nitrate

noun

Definitions

Noun
  1. 1
    KNO₃, a naturally occurring salt, notably used as an ingredient of gunpowder; also used a food preservative and as an ingredient in toothpaste for sensitive gums; historically used in the production of nitric acid (HNO₃). uncountable
  2. 2
    (KNO3) used especially as a fertilizer and explosive wordnet

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