radiation

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ra|dia|tion /r'eɪdi'eɪʃən/
1 [N-UNCOUNT] also N in pl, oft N n
Radiation consists of very small particles of a radioactive substance. Large amounts of radiation can cause illness and death.
They suffer from health problems and fear the long term effects of radiation...
2 [N-UNCOUNT] also N in pl, usu with supp
Radiation is energy, especially heat, that comes from a particular source.
The satellite will study energy radiation from stars.ra|dia|tion sick|ness
[N-UNCOUNT]
Radiation sickness is an illness that people get when they are exposed to too much radiation.

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