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1. Oxford American Dictionary

   semiconductor

   • IPA[ˈsemēkənˌdəktər]

   美式

   • n.
     a solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects. Devices made of semiconductors, notably silicon, are essential components of most electronic circuits.

   • noun: semiconductor, plural noun: semiconductors