Radiation

noun

energy that is radiated or transmitted in the form of rays or waves or particles

noun

the act of spreading outward from a central source

noun

syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions)

Synonyms

radiation sickness radiation syndrome

Examples

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

noun

the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

Synonyms

radioactivity

noun

the spread of a group of organisms into new habitats

noun

a radial arrangement of nerve fibers connecting different parts of the brain

noun

(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

Synonyms

radiotherapy radiation therapy actinotherapy irradiation

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