Bible Dictionaries
Nitre

People's Dictionary of the Bible

Nitre. Proverbs 25:20. This is, no doubt, the natron found abundantly in certain Egyptian lakes, 50 miles west of Cairo. The Egyptians use it in bread and for soap; also, it is said, mixed with vinegar as a cure for toothache. The contrariety between these two ingredients illustrates the place referred to.

Bibliography Information
Rice, Edwin Wilbur, DD. Entry for 'Nitre'. People's Dictionary of the Bible. https://www.studylight.org/​dictionaries/​eng/​rpd/​n/nitre.html. 1893.