Assertion: potassium nitrate | /r/Synonym | niter
Facets:
value: commonly
type: DEGREE
Source sentences:
text: Potassium nitrate, more commonly known as saltpeter or niter, has been used by humans for many centuries.
text: Nitrates, particularly potassium nitrate (known also as niter or nitre and saltpeter), have been known since prehistoric times, and in the Middle Ages, natural deposits were commercially exploited.