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radium Definition

ra·dium (rā′dē əm)

noun

a radioactive, metallic chemical element, one of the alkaline-earth metals, found in very small amounts in pitchblende and other minerals containing uranium: it undergoes spontaneous atomic disintegration through several stages, emitting alpha, beta, and gamma rays and finally forming an isotope of lead: radium is used in neutron sources and in the treatment of cancer and other diseases: symbol, Ra; at. no., 88

Etymology: ModL < L radius, ray (see radius) + -ium: so named (1898) by P. & M. Curie & G. Bémont, because it emits rays

radium Usage Examples

Converse of object

  • discover: The action was a process and who discovered radium are those of.
  • use: Souttar was also the first at the Hospital to use radium in cancer treatment.
  • contain: Immediately the Congress ordered the removal of all products containing radium from the market.
  • become: When uranium decays, it becomes radium, and when radium decays, it becomes radon.

Preposition: in

uranium: Retains the same plate in order radium in uranium.

Modifies a noun

  • emanation: Exposure he developed any voltage and radium emanation but.
  • radioactivity: Out only a no mention of quot radium radioactivity.
  • treatment: From 1931 it was linked with the Holt Radium Institute which gave radium treatments for patients in local hospitals.
  • decay: How quickly does a cup of tea cool, or radium decay?
  • ray: My husband published, beside, a study of the action of a magnetic field on radium rays.
  • needle: Imagine trying to find a lost Radium needle on a rubbish dump with a gold leaf electroscope!

Noun used with modifier

  • quot: Out only a no mention of quot radium radioactivity.
  • element: Working together, Marie and her husband Pierre, discovered the chemical elements radium and polonium.