impedance
Pronunciation: [ɪmˈpiːdn̩s]
The English word “impedance” has 4 meanings listed here.
noun
- The act of impeding; that which impedes; a hindrance.
- 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.
- a measure of opposition to motion of something subjected to a force; the ratio of force to velocity treated as complex quantities.
- the ratio of sound pressure to volume flow rate treated as complex quantities.
Etymology
From impede + -ance. In sense 2 and sense 3 it was coined by English mathematician and physicist Oliver Heaviside in 1886.
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More English words
- impecuniously
- impecuniousness
- impecunity
- imped
- impedance coil
- impedance mismatch
- impedance plethysmography
- impedancemetric
About this dictionary
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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.