radiations

1. energy that is radiated or transmitted in the form of rays or waves or particlesSynonyms: radiation

2. the act of spreading outward from a central sourceSynonyms: radiation

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 hoursExamples: "he was suffering from radiation"Synonyms: radiation, radiation sickness, radiation syndrome

4. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decaySynonyms: radiation, radioactivity

5. the spread of a group of organisms into new habitatsSynonyms: radiation

6. a radial arrangement of nerve fibers connecting different parts of the brainSynonyms: radiation