D defs.my
Entry 1 sense Webster, 1913

Tennantite

· Ten·nant·ite · IPA
01 n. A blackish lead-gray mineral, closely related to tetrahedrite. It is essentially a sulphide of arsenic and copper.
  1. 1.
    A blackish lead-gray mineral, closely related to tetrahedrite. It is essentially a sulphide of arsenic and copper.(Min.)