重じゅう元げん素そ

noun

heavy element

Chemistry term for elements with high atomic weight, typically contrasted with light elements (軽元素).

• 宇う宙ちゅうでは、重じゅう元げん素そは超ちょう新しん星せい爆ばく発はつで生せい成せいされる。

  In the universe, heavy elements are produced in supernova explosions.