1. 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
2. a conductor made with semiconducting material
行業詞典
機械： 半導體［發光］數碼管；［luminescent］ character display tube 能顯示數碼和（或）符號的發光二極管組合體。；材料的電阻率界于金屬與絕緣材料之間的材料。這種材料在某個溫度范圍內隨溫度升高而增加電荷載流子的濃度，電阻率下降。；