radiation : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: radiation	by the DICT Development Group
2 results for radiation
From WordNet (r) 3.0 (2006) [wn]:
radiation n energy that is radiated or transmitted in the form of rays or waves or particles the act of spreading outward from a central source 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" Synonym(s): radiation sickness, radiation syndrome, radiation the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay Synonym(s): radiation, radioactivity the spread of a group of organisms into new habitats a radial arrangement of nerve fibers connecting different parts of the brain (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance Synonym(s): radiotherapy, radiation therapy, radiation, actinotherapy, irradiation
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Radiation \Ra`dia"tion\, n. [L. radiatio: cf. F. radiation.] 1. The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness. 2. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation* of heat.