radiation sickness
US /ˌreɪ.diˈeɪ.ʃən ˌsɪk.nəs/
UK /ˌreɪ.diˈeɪ.ʃən ˌsɪk.nəs/
1.
an illness caused by exposure of the body to radiation, characterized by nausea, vomiting, diarrhea, and hair loss.
:
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The survivors of the nuclear accident suffered from severe radiation sickness.
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Symptoms of radiation sickness can appear hours or days after exposure.