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Meaning of potassium nitrate | Babel Free

Noun CEFR B2

Definitions

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

Equivalents

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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