radiation

Từ điển Oxford Advanced Learner 8th

ra·di·ation [radiation radiations] BrE [ˌreɪdiˈeɪʃn] NAmE [ˌreɪdiˈeɪʃn] noun
1. uncountable, countable 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
•radiation sickness
•the radiations emitted by radium
2. uncountable heat, energy, etc. that is sent out in the form of ↑rays
•ultraviolet radiation
•electromagnetic radiation from power lines
3. (also ˌradiˈation therapy)uncountable the treatment of cancer and other diseases using radiation
compare ↑chemotherapy, ↑radiotherapy

Word Origin:
late Middle English (denoting the action of sending out rays of light): from Latin radiatio(n-), from radiare ‘emit rays’, from radius ‘ray, spoke’.

Example Bank:
•Nuclear testing has exposed millions of people to radiation.
•Ozone protects the Earth from harmful ultraviolet radiation.
•Patients receive high doses of radiation during cancer treatment.
•The counter showed high levels of radiation.
•The ozone layer absorbs solar radiation.
•fluctuations in the cosmic microwave background radiation
•radiation from computer screens
•radiation leaking from nuclear power stations
•the threat of radiation leaks

• Từ đồng nghĩa / Synonyms:
  radiotherapy, radiation therapy, actinotherapy, irradiation, radioactivity, radiation sickness, radiation syndrome