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Meaning of radiation
1 definition found
From WordNet (r) 3.0 (2006) [wn]:
radiation
n 1: energy that is radiated or transmitted in the form of rays
or waves or particles
2: the act of spreading outward from a central source
3: 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" [syn: {radiation sickness},
{radiation syndrome}, {radiation}]
4: the spontaneous emission of a stream of particles or
electromagnetic rays in nuclear decay [syn: {radiation},
{radioactivity}]
5: the spread of a group of organisms into new habitats
6: a radial arrangement of nerve fibers connecting different
parts of the brain
7: (medicine) the treatment of disease (especially cancer) by
exposure to a radioactive substance [syn: {radiotherapy},
{radiation therapy}, {radiation}, {actinotherapy},
{irradiation}]
WordNet ® Princeton University. http://wordnet.princeton.edu
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