impedance

Meaning

1. (countable, uncountable) The act of impeding; that which impedes; a hindrance.
2. (countable, uncountable) 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. (countable, uncountable, usually) A quantity analogous to electrical impedance in some other energy domain
4. (countable, uncountable, usually) A quantity analogous to electrical impedance in some other energy domain

Synonyms

resistance

electrical resistance

electric resistance

ohmic resistance

resistivity

electrical impedance

reactance

rebuff

resistor

opposition

Translations

Impedanz

impédance

impedancia

impedenza

impedantie

impedância

impedància

empedans

Scheinwiderstand

معاوقة

resistividad

résistance

résistivité

ohmscher Widerstand

Pronounced as (IPA)

/ɪmˈpiːdn̩s/

Etymology

From impede + -ance. In sense 2 and sense 3 it was coined by English mathematician and physicist Oliver Heaviside in 1886.