selenio 104
selenium . ( Of the Gr. ?, the Moonlight). 1. m. chemical element of no. atóm. 34 Low at the Earth's crust; It is native with sulfur, and in the form of selenide, pyrite and other minerals. It presents several allotropic forms of red and grey. Semiconductor properties it has wide application in the manufacture of electronic equipment, and is used to give red color in glass, enamels and ceramics industry. (Símb.) Se ).