Definition of radiation

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  • radiation is a valid Scrabble US word with a point value of 10
  • radiation is a valid Scrabble UK word with a point value of 10
  • radiation is a valid Words with friends word with a point value of 11

Definition of radiation

  • the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (noun)

    Synonyms

    1. radioactivity
  • 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 (noun)

    Examples

    1. he was suffering from radiation

    Synonyms

    1. radiation sickness
    2. radiation syndrome
  • (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance (noun)

    Synonyms

    1. actinotherapy
    2. irradiation
    3. radiation therapy
    4. radiotherapy
  • a radial arrangement of nerve fibers connecting different parts of the brain (noun)
  • energy that is radiated or transmitted in the form of rays or waves or particles (noun)
  • the act of spreading outward from a central source (noun)
  • the spread of a group of organisms into new habitats (noun)

See definition of radiation in Merriam Webster