osmium
/ˈɒzmɪəm/noun
mass noun
- the chemical element of atomic number 76, a hard, dense, silvery-white metal of the transition series. (Symbol:
O S)（化学元素）锇（符号：O S）。
词源
early 19th cent.: modern Latin, from Greek osmē 'smell' (from the pungent smell of its tetroxide).