Magnetic Levitation

n. maglev, high-speed train technology; electrically operated high-speed train that glides above a track by magnetic fields

Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended above another object with no support other than magnetic fields. The electromagnetic force is used to counteract the effects of the gravitational force.
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Noun
1. high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction
(synonym) maglev
(hypernym) rail technology, railroading

A rail transportation system with exclusive right-of-way which is propelled along a fixed guideway system by the attraction or repulsion of magnets on the rails and under the rail cars. (APTA1)