tetradymite

[ te-trad-uh-mahyt ]
/ tɛˈtræd əˌmaɪt /

noun

a mineral, bismuth telluride and sulfide, Bi2Te2S, occurring in soft-gray to black foliated masses.

Origin of tetradymite

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

Example sentences from the Web for tetradymite

British Dictionary definitions for tetradymite

tetradymite
/ (tɛˈtrædɪˌmaɪt) /

noun

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