Etymology
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electromagnetic (adj.)

also electro-magnetic, "Pertaining to electromagnetics, or to the relation between electricity and magnetism; of the nature of electromagnetism," 1821; see electro- + magnetic.

updated on September 15, 2020

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Definitions of electromagnetic from WordNet

electromagnetic (adj.)
pertaining to or exhibiting magnetism produced by electric charge in motion;
electromagnetic energy
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.