Definitions For Radiation

noun

• (medicine) the treatment of disease (especially cancer) by exposure to 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 some forms of cancer and other diseases; severe exposure can cause death within hours
• A type of dangerous and powerful energy that is produced by radioactive substances and nuclear reactions
• The use of controlled amounts of radiation for the treatment of diseases (such as cancer)
• Energy that comes from a source in the form of waves or rays you cannot see