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Noun electromagnetism has 2 senses
  1. electromagnetism - magnetism produced by an electric current; "electromagnetism was discovered when it was observed that a copper wire carrying an electric current can magnetize pieces of iron or steel near it"
    --1 is a kind of
    magnetism, magnetic attraction, magnetic force
  2. electromagnetism, electromagnetics - the branch of physics concerned with electromagnetic phenomena
    --2 is a kind of physics, physical science, natural philosophy
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