#semiconductor  a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; it increases with temperature and in the presence of impurities
  supertype:  #conductor.material  a substance that readily conducts e.g. electricity and heat
  member of:  #semiconductor_device
  subtype:  #germanium__Ge__atomic_number_32  a brittle gray crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite

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