tetradymite

[ te-trad-uh-mahyt ]

noun

1. a mineral, bismuth telluride and sulfide, Bi 2 Te 2 S, occurring in soft-gray to black foliated masses.

tetradymite

/ tɛˈtrædɪˌmaɪt /

noun

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

Word History and Origins

Origin of tetradymite¹

1840–50; < Greek tetrádym ( os ) fourfold ( tetra-, didymous ) + -ite ¹; modeled on German Tetradymit

Word History and Origins

Origin of tetradymite¹

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

Example Sentences

The tritelluride constitutes the mineral tetradymite, Bi2Te3.

From Project Gutenberg

It is also found in some comparatively rare minerals, such as tetradymite, combined with tellurium, and associated with gold.

From Project Gutenberg