Bible Dictionaries
Nitre

Webster's Dictionary

(1):

(n.) See Niter.

(2):

(n.) A white crystalline semitransparent salt; potassium nitrate; saltpeter. See Saltpeter.

(3):

(n.) Native sodium carbonate; natron.

Bibliography Information
Webster, Noah. Entry for 'Nitre'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​n/nitre.html. 1828.