radiation -- (energy that is radiated or transmitted in the form of rays or waves or particles)
radiation -- (the act of spreading outward from a central source)
radiation sickness, radiation syndrome, radiation -- (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")
radiation, radioactivity -- (the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay)
radiation -- (the spread of a group of organisms into new habitats)
radiation -- (a radial arrangement of nerve fibers connecting different parts of the brain)
(Sound)
