reactance

 
Pronunciation: /rɪˈakt(ə)ns/

noun

[mass noun] Physics
  • the non-resistive component of impedance in an AC circuit, arising from the effect of inductance or capacitance or both and causing the current to be out of phase with the electromotive force causing it: the capacitor exhibits negligible reactance at the operating frequency [count noun]: complicated combinations of reactances and resistances