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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A magnet consisting essentially of a coil of insulated wire wrapped around a soft iron core that is magnetized only when current flows through the wire.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A magnet which attracts metals only when electrically activated


electro- +‎ magnet (Wiktionary)



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