Definition of "impedance" in Englisch

noun

1. The act of impeding; that which impedes; a hindrance.

2. (physics) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.

3. (physics) A quantity analogous to electrical impedance in some other energy domain