radiation

      英[re?d?'e??(?)n] 美[,red?'e??n]
      • n. 輻射;發(fā)光;放射物

      英英釋意


      1. energy that is radiated or transmitted in the form of rays or waves or particles
      2. the act of spreading outward from a central source
      3. 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 an
      "he was suffering from radiation"
      4. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
      5. the spread of a group of organisms into new habitats
      6. a radial arrangement of nerve fibers connecting different parts of the brain
      7. (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance

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