What is the meaning of radiation sickness?

noun

• Syndrome resulting from exposure to ionizing radiation (e. G., 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 and some forms of cancer and other diseases; severe exposure can cause death within hours.
  • usage: "he was suffering from radiation"
  • synonyms: radiation syndrome, radiation