radiationnoun [ U ]
uk/ˌreɪ.diˈeɪ.ʃən/us/ˌreɪ.diˈeɪ.ʃən/C1 a form of energy that comes from a nuclear reaction and that can be very dangerous to health:
Many servicemen suffered radiation sickness after the early atomic tests.
energy from heat or light that you cannot see:
microwave/ultraviolet/electromagnetic radiation
More examples
- The radiation leak has had a disastrous effect on the environment.
- It is feared that people living near the power station may have been exposed to radiation.
- Wearing the correct type of clothing will reduce the risk from radiation.
- There is some danger of low level radiation.
- So what is an acceptable level of radiation?
Thesaurus: synonyms and related words
Physics: radiation & radioactivity
- alpha particle
- background radiation
- beta particle
- gamma radiation
- gamma ray
- half-life
- irradiate
- irradiation
- radioactive
- radioactivity
- radioisotope
- sievert
- tritium
- UVA
- UVB
- weak force