(physics) A substance with electrical properties intermediate between a good conductor and a good insulator.
A substance that has no resistance to conducting an electric current
a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities
a conductor made with semiconducting material
A semiconductor material has an electrical conductivity value falling between that of a conductor, such as metallic copper, and an insulator, such as glass. Its resistivity falls as its temperature rises; metals behave in the opposite way.