Bible Dictionaries
Nitre

Morrish Bible Dictionary

The natron of the moderns, not what is now called nitre, which is saltpetre. As vinegar upon natron or alkali (which would effervesce and evaporate) so is the unsuitableness of singing mirthful songs to a heavy heart. Proverbs 25:20 . It is a mineral alkali, and with oil is made into soap. Jeremiah 2:22 .

Bibliography Information
Morrish, George. Entry for 'Nitre'. Morrish Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​mbd/​n/nitre.html. 1897.