Any illness produced by ionizing radiation with symptoms ranging from nausea through to death
Radiation sickness is an illness that people get when they are exposed to too much radiation. Illness induced by exposure to ionizing radiation, ranging in severity from nausea, vomiting, headache, and diarrhea to loss of hair and teeth, reduction in red and white blood cell counts, extensive hemorrhaging, sterility, and death. an illness that is caused when your body receives too much radiation
exposure to radioactive chemicals or to nuclear explosions; low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts andsome forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation