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tetradymite

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

noun

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

tetradymite British  
/ tɛˈtrædɪˌmaɪt /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of tetradymite

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.