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- Dictionarysolenoid/ˈsəʊlənɔɪd/
noun
- 1. a cylindrical coil of wire acting as a magnet when carrying electric current.
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noun
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A solenoid is a type of electromagnet formed by a helical coil of wire whose length is substantially greater than its diameter, which generates a controlled magnetic field. The coil can produce a uniform magnetic field in a volume of space when an electric current is passed through it. Wikipedia