Definitions of radiation

  1. ( medicine) the treatment of disease ( especially cancer) by exposure to radiation from a radioactive substance
  2. syndrome resulting from exposure to ionizing radiation ( e. g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; " he was suffering from radiation"
  3. the act of spreading outward from a central source
  4. a radial arrangement of nerve fibers connecting different parts of the brain
  5. the spread of a group of organisms into new habitats
  6. energy that is radiated or transmitted in the form of rays or waves or particles
  7. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
  8. The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.
  9. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.
  10. 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.
  11. Act of radiating: the emission and diffusion of rays of light or heat.
  12. The act of radiating, or the state of being radiated.
  13. The diffusion of rays of light; divergence or diffusion from a point, like rays of light.
  14. 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.

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
  3. Two men were moving around in the lower front room, and the radiation from their green lights showed them plainly. – The White Invaders by Raymond King Cummings
  4. But the deadness of Helen's feelings, the heartlessness because of which she cried out against herself, seemed, in a vague way, by herself unacknowledged yet felt, if not caused by, yet associated with some subtle radiation from the being of George Bascombe. – Thomas Wingfold, Curate by George MacDonald
  5. Yet with this immense radiation it suffers no diminution of energy; nor can any scientist yet discern from what source this power is fed. – The Life Radiant by Lilian Whiting
  6. Ken was forced to admit the possibility of this, inasmuch as radiation products were scattered heavily now throughout the Earth's atmosphere. – The Year When Stardust Fell by Raymond F. Jones
  7. The mode of accomplishing this is by placing coils of steam, or hot water pipes, under windows, which warm the parlor walls and furniture, partly by radiation, and partly by the air warmed on the heated surfaces of the coils. – The American Woman's Home by Catherine E. Beecher and Harriet Beecher Stowe
  8. The intensity of the sun's heat must then be not less than nine times as great as the greatest radiation to which we are exposed. – The Story of the Heavens by Robert Stawell Ball
  9. Here, he said, tearing at it, radiation. – The Colors of Space by Marion Zimmer Bradley
  10. Owing to these facts, the injected air of a furnace is always warmer than is good for the lungs, and much warmer than is ever needed in rooms warmed by radiation from fires or heated surfaces. – The American Woman's Home by Catherine E. Beecher and Harriet Beecher Stowe