Webster's English Dictionary

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magnetism

mag.ne.tism \'mag-n*-.tiz-*m\ n 1a: a class of physical phenomena that 
   include the attraction for iron obse rved in lodestone and a magnet, are 
   believed to be inseparably associated with moving electricity, are 
   exhibited by both magnets and electric currents, and are characterized by 
   fields of force 1b: a science that deals with magnetic phenomena  2: an 
   ability to attract or charm