RADIATION

(noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
synonyms : actinotherapy , irradiation , radiation therapy , radiotherapy
(noun) the act of spreading outward from a central source
(noun) a radial arrangement of nerve fibers connecting different parts of the brain
(noun) the spread of a group of organisms into new habitats
(noun) energy that is radiated or transmitted in the form of rays or waves or particles
(noun) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
synonyms : radioactivity
(noun) 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"
synonyms : radiation sickness , radiation syndrome

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