noun🔗ShareNative sodium carbonate; natron."The ancient Egyptians used niter, gathered from dry lake beds, to help preserve mummies. "chemistrymineralsubstancegeologyChat with AIVocabulary GamePractice Reading
noun🔗ShareA mineral form of potassium nitrate (saltpetre) used in making gunpowder."The old chemistry book described how niter, found in certain caves, was a key ingredient in making gunpowder for cannons. "mineralsubstancechemistrygeologyweaponmaterialChat with AIVocabulary GamePractice Reading
