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chalcogen

[kal-kuh-juh n, -jen]
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noun
  1. Chemistry. any of the elements oxygen, sulfur, selenium, tellurium, and polonium, which form the VIa group in the periodic table.

Origin of chalcogen

First recorded in 1960–65; chalco- + -gen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for chalcogen

chalcogen

noun
  1. any of the elements oxygen, sulphur, selenium, tellurium, or polonium, of group 6A of the periodic table

Word Origin

C20: from chalco (pyrite) + -gen
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