Electro-magnet :: Electro-magnet (n.) A mass, usually of soft iron, but sometimes of some other magnetic metal, as nickel or cobalt, rendered temporarily magnetic by being placed within a coil of wire through which a current of electricity is passing. The metal is generally in the form of a bar, either straight, or bent into the shape of a horseshoe..

Electro-magnetic :: Electro-magnetic (a.) Of, Pertaining to, or produced by, magnetism which is developed by the passage of an electric current..

Electro-magnetism :: Electro-magnetism (n.) The magnetism developed by a current of electricity; the science which treats of the development of magnetism by means of voltaic electricity, and of the properties or actions of the currents evolved..

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