noun🔗ShareA nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor."The factory uses selenium in the process of making red-colored glass. "elementsubstancematerialchemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA single atom of this element."The scientist identified a single selenium atom using a powerful microscope. "elementchemistrymaterialsubstancescienceChat with AIVocabulary GamePractice Reading
