ferromagnetic material meaning, ferromagnetic material definition | English Cobuild dictionary

Collins

ferromagnetism

  

      n   the phenomenon exhibited by substances, such as iron, that have relative permeabilities much greater than unity and increasing magnetization with applied magnetizing field. Certain of these substances retain their magnetization in the absence of the applied field. The effect is caused by the alignment of electron spin in regions called domains  
   Compare       diamagnetism       paramagnetism  
  
See also  
    magnet       Curie-Weiss law  
   ferromagnetic             adj  
English Collins Dictionary - English Definition & Thesaurus  
Collaborative Dictionary     English Definition
n.
hin, often tapered piece of material, such as wood, stone, or metal, used to fill gaps, make something level, or adjust something to fit properly
exp.
something that you say which means you cannot make a good quality product using bad quality materials

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