（1）英文：conductivity(specific conductance)，缩写为：cond。
（2）定义：电阻率的倒数为电导率，用希腊字母κ表示（或者γ[1] ），κ=1/ρ。除非特别指明，电导率的测量温度是标准温度（ 25 °C ）。
（3）单位：在国际单位制中，电导率的单位称为西门子/米（S/m），其它单位有：S/m，mS/cm，μS/cm。1S/m=10dS/m=1000mS/m=1000000μS/m=10mS/cm=10000μS/cm。
（4）说明：电导率的物理意义是表示物质导电的性能。电导率越大则导电性能越强，反之越小。另外，不少人将电导跟电导率混淆：电导是电阻的倒数，电导率是电阻率的倒数。

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