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Noun: diamagnetism  `dI-u'mag-ni`ti-zum
  1. Phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet

Derived forms: diamagnetisms

See also: diamagnetic

Type of: magnetic attraction, magnetic force, magnetism

Encyclopedia: Diamagnetism