D defs.my
Entry 1 sense Webster, 1913

Reactance

/(rē̇*ăk"tans)/ · Re·act·ance · IPA
01 n. The influence of a coil of wire upon an alternating current passing through it, tending to choke or diminish the current, or the similar in…
  1. 1.
    The influence of a coil of wire upon an alternating current passing through it, tending to choke or diminish the current, or the similar influence of a condenser; inductive resistance. Reactance is measured in ohms. The reactance of a circuit is equal to the component of the impressed electro-motive force at right angles to the current divided by the current, that is, the component of the impedance due to the self-inductance or capacity of the circuit.(Elec.)