noun. opposition to the flow of electric current resulting from inductance and capacitance (rather than resistance).
Example sentences of the word reactance
1. Noun, singular or mass
Ammeters work to measure electrical current by measuring the current through a set of coils with a very low resistance and inductive reactance.
2. Verb, base form
Split-phase motors are a type of AC motor that uses small-gage starting winding and different resistance to reactance ratios.