Emission of any rays from either natural or man-made origins, such as radio waves, the sun's rays, medical X-rays and the fall-out and nuclear wastes produced by nuclear weapons and nuclear energy production. Radiation is usually divided between non-ionizing radiation, such as thermal radiation (heat) and light, and nuclear radiation. Non-ionizing radiation includes ultraviolet radiation from the sun which, although it can damage cells and tissues, does not involve the ionization events of nuclear radiation.
(Source: WRIGHT)
the act of radiating
the physical phenomenon of radiating energy in the form of waves or particles
(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
the act of spreading outward from a central source
a radial arrangement of nerve fibers connecting different parts of the brain
the spread of a group of organisms into new habitats
energy that is radiated or transmitted in the form of rays or waves or particles
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
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
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
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
