EnglishMain Dictionary
radiation
Universal Words
noun
1 [U,C] powerful and very dangerous rays that are sent out from RADIOACTIVE substances:
high levels / doses of radiation that damage cells * the link between exposure to radiation and childhood cancer * a radiation leak from a nuclear power station * the radiations emitted by radium
2 [U] heat, energy, etc. that is sent out in the form of rays:
ultraviolet radiation * electromagnetic radiation from power lines
3 (also radiation therapy) [U] the treatment of CANCER and other diseases using radiation
compareCHEMOTHERAPY, RADIOTHERAPY
