Real Dictionary

conductance in American English
the ability of a component to conduct electricity, measured in siemens and equal to the ratio of the current to the voltage: it is the reciprocal of resistance: symbol, G
noun: the conducting power, esp. the power to conduct alternating current, of a conductor, equal to the real part of the admittance, and in a circuit with no reactance equal to the reciprocal of the resistance

conductance in British English
noun: the ability of a system to conduct electricity, measured by the ratio of the current flowing through the system to the potential difference across it; the reciprocal of resistance. It is measured in reciprocal ohms, mhos, or siemens

conductance in Electrical Engineering
noun: Conductance is a measure of how easy it is for a particular voltage to force a current through a resistor.