radiation
ray dee ay shuhn
- n energy that is radiated or transmitted in the form of rays or waves or particles
- n the act of spreading outward from a central source
- n 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 - n the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
- n the spread of a group of organisms into new habitats
- n a radial arrangement of nerve fibers connecting different parts of the brain
- n (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
- Whether the end result is a deadly illness or a striking change in the next generation, the impact of genetic mutations caused by radiation is not fully understood.
- New techniques may render old-fashioned radiation treatments obsolete.
- Although newer machines can be adjusted to deliver up to 50% less radiation for children and small adults, a 2001 study published in the American Journal of Radiation showed that .