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noun chal·co·gen \ˈkal-kə-jən\

Definition of chalcogen

  1. :  any of the elements oxygen, sulfur, selenium, and tellurium

Origin and Etymology of chalcogen

International Scientific Vocabulary chalk- bronze, ore (from Greek chalkos) + -gen; from the occurrence of oxygen and sulfur in many ores

First Known Use: circa 1961

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