Assertion: tartar | /r/HasProperty | applied by early 17th century
Facets:
value: to any crust
type: TRANSITIVE-OBJECT
Source sentences:
text: By the early 17th century, “tartar” was applied by analogy to any crust formed by the contact of a liquid and a surface, but it wasn’t until 1806 that “tartar” was used to mean the hard deposit on teeth.