The Collaborative International Dictionary of English v.0.48:

Telluret \Tel"lu*ret\, n. (Chem.)
   A telluride. [Obsoles.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Telluride \Tel"lu*ride\, n. (Chem.)
   A compound of tellurium with a more positive element or
   radical; -- formerly called telluret.
   [1913 Webster]