Elec. opposition to the flow of alternating current in a circuit or circuit element, caused by inductance or capacitance and measured in ohms: symbol, X
Origin of reactancereact + -ance
Opposition to the flow of alternating current caused by the inductance and capacitance in a circuit rather than by resistance.
(uncountable) (symbol X)
- (physics, electrics) The opposition to the change in flow of current in an alternating current circuit, due to inductance and capacitance; the imaginary part of the impedance.
- (psychology) An emotional reaction in direct contradiction to rules or regulations that threaten or eliminate specific behavioral freedoms.