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Noun electromagnetic wave has 1 sense
  1. electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
    --1 is a kind of radiation
    --1 has parts: photon
    --1 has particulars:
     actinic radiation, actinic ray; beam, ray, electron beam; black-body radiation, blackbody radiation; Hertzian wave; gamma radiation, gamma ray; line; microwave; radio wave, radio emission, radio radiation; X ray, X-radiation, roentgen ray
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