tetradymite

[te-trad-uh-mahyt]

Origin of tetradymite

1840–50; < Greek tetrádym(os) fourfold (see tetra-, didymous) + -ite1; modeled on German Tetradymit
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British Dictionary definitions for tetradymite

tetradymite

noun
  1. a grey metallic mineral consisting of a telluride and sulphide of bismuth. Formula: Bi 2 Te 2 S

Word Origin for tetradymite

C19: from Late Greek tetradumos fourfold, from Greek tetra- + didumos double
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