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impedance

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noun im·ped·ance \im-ˈpē-dən(t)s\

Definition of impedance

  1. :  something that impedes :  hindrance: as a :  the apparent opposition in an electrical circuit to the flow of an alternating current that is analogous to the actual electrical resistance to a direct current and that is the ratio of effective electromotive force to the effective current b :  the ratio of the pressure to the volume displacement at a given surface in a sound-transmitting medium



1886

First Known Use of impedance

1886


Medical Dictionary

impedance

play
noun im·ped·ance \im-ˈpēd-ən(t)s\

Medical Definition of impedance

  1. 1:  the apparent opposition in an electrical circuit to the flow of an alternating current that is analogous to the actual electrical resistance to a direct current and that is the ratio of effective electromotive force to the effective current

  2. 2:  the ratio of the pressure to the volume displacement at a given surface in a sound-transmitting medium

  3. 3:  opposition to blood flow in the circulatory system




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