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Definitions of radiation

  1. (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance Scrapingweb Dictionary DB
  2. the act of spreading outward from a central source Scrapingweb Dictionary DB
  3. a radial arrangement of nerve fibers connecting different parts of the brain Scrapingweb Dictionary DB
  4. the spread of a group of organisms into new habitats Scrapingweb Dictionary DB
  5. energy that is radiated or transmitted in the form of rays or waves or particles Scrapingweb Dictionary DB
  6. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay Scrapingweb Dictionary DB
  7. The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness. Webster Dictionary DB
  8. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat. Webster Dictionary DB
  9. The coming forth and spreading, as of rays, in all directions from a common center; as, the radiation of light or heat from a shining or heated body. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  10. Act of radiating: the emission and diffusion of rays of light or heat. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  11. The act of radiating, or the state of being radiated. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  12. The emission and diffusion of rays of light or heat from a luminous or heated body; the diverging or shooting forth from a point or surface, like the diverging rays of light. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.

Usage examples for radiation

  1. 3. They multiply, by the expansion of their branches, the surfaces which are cooled by radiation – The Earth as Modified by Human Action by George P. Marsh
  2. Equally true is it that regret implies real possibilities in the world- not always, though, for we may regret death or the radiation into extra terrestrial space of solar energy without believing that the prevention of either is possible. – Determinism or Free-Will? by Chapman Cohen
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