Radiation | Mean of radiation in English Dictionary

/ˌreɪdiˈeɪʃən/

• Noun
• a type of dangerous and powerful energy that is produced by radioactive substances and nuclear reactions
1. She was exposed to high levels of radiation.
• the use of controlled amounts of radiation for the treatment of diseases (such as cancer)
1. He goes in for radiation next week.
• energy that comes from a source in the form of waves or rays you cannot see
1. ultraviolet radiation

• the process of giving off energy in the form of waves or rays you cannot see
1. the sun's radiation of heat