tho·ri·um
noun/ˈθɔːriəm/
/ˈθɔːriəm/
[uncountable] (symbol Th)
- a chemical element. Thorium is a white radioactive metal used as a source of nuclear energy.
钍（放射性化学元素） Word Originmid 19th cent.: named after Thor (the Greek god of thunder, the weather, agriculture and the home).