• noun a solid crystalline substance with electrical conductivity greater than insulators but less than good conductors

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  • noun a solid material such as silicon that has a resistivity midway between that of a conductor and a resistor, with properties of both a conductor and an insulator; used as substrates for semiconductor devices such as diodes, transistors, and integrated circuits.


  • noun a material with conductive properties between those of a conductor such as a metal and an insulator


  • An electric conducting material, with resistivity in the range between metals and insulators, such as germanium or silicon.
  • Miniature electric devices manufactured from semiconductor materials.


  • A material, usually a crystal, whose conductivity lies somewhere between that of an electric conductor, such as a metal, and that of an insulator, such as rubber. A semiconductor may be a pure metal, such as silicon or germanium, or a compound such as gallium arsenide or indium phosphide. The electrical characteristics of an intrinsic semiconductor depend solely on a pure crystal, while those of an extrinsic semiconductor rely on dopants which are introduced. In a p-type semiconductor trivalent dopants are added to increase conductivity, while pentavalent dopants are added to enhance the conductivity n-type semiconductors. mobile electrons, holes, or ions transport charges through semiconductors. Used extensively to make semiconductor devices. Also called semiconductor material.