OXFORD 9000
📚 noun • entry_id 5066

selenium

/sɪˈliːni.əm/
Meanings (ES + gloss)
selenio
A nonmetallic chemical element (symbol Se) with an atomic number of 34, used mainly in glassmaking and pigments and as a semiconductor.
Pluck almost any cell from your body and it will have a million or more selenium atoms in it.
Word forms