1. radium

noun. ['ˈreɪdiːəm'] an intensely radioactive metallic element that occurs in minute amounts in uranium ores.


  • uranium ore
  • atomic number 88
  • Ra
  • metal

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Words that Rhyme with Radium

  • vanadium
  • palladium
  • stadium

Example sentences of the word radium

1. Noun, singular or mass
Decades ago, radium salts were mixed into paints to make them glow in the dark.

Quotes containing the word radium

1. Certein bodies... become luminous when heated. Their luminosity disappears after some time, but the capacity of becoming luminous afresh through heat is restored to them by the action of a spark, and also by the action of radium.
- Marie Curie