Con`duc*tiv"i*ty (?), n.
The quality or power of conducting, or of receiving and transmitting, as, the conductivity of a nerve.
Thermal conductivity Physics, the quantity of heat that passes in unit time through unit area of<-- a--> plate whose thickness is unity, when its opposite faces differ in temperature by one degree. J. D. Everett. -- Thermometic conductivity Physics, the thermal conductivity when the unit of heat employed is the heat required to raise <--a -->unit volume of the substance one degree.
© Webster 1913.