californium
/kælɪˈfɔːnɪəm/noun
mass noun
- the chemical element of atomic number 98, a radioactive metal of the actinide series, first produced by bombarding curium with helium ions. (Symbol: Cf)（化学元素）锎（符号：Cf）。
词源
1950s: named after California University (where it was first made) + -IUM.