See Also: chalcogen(medicine)
chalcogen(dictionary)

chalcogen (iou)



chalcogen noun. M20.
[German Chalkogen, from Greek khalkos in supposed sense 'ore', after halogen.]
Chemistry. Any of the elements of group VIA of the periodic table (oxygen, sulphur, selenium, tellurium, and polonium).
chal'cogenide noun a binary compound of a chalcogen M20.