Wordiyoradium
🇬🇧 UK/'reidiәm/🇺🇸 US
B2
Definitions
n.
A highly radioactive metallic chemical element, symbol Ra, atomic number 88.
镭（化学元素，符号Ra）
🧩 Root Breakdown
Root-derivedCommon Collocations
- 1.radium poisoning镭中毒
- 2.radium therapy镭疗法
- 3.[radium decay]镭的衰变
- 4.radioactive radium放射性镭
Example Sentences
- 1.
Marie Curie discovered radium in 1898 after years of painstaking research.
- 2.
Radium was once used in luminous watch dials, before its dangers were understood.