IMPEDANCE

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does impedance mean? 

• IMPEDANCE (noun)
  The noun IMPEDANCE has 1 sense:

1. a material's opposition to the flow of electric current; measured in ohms

  Familiarity information: IMPEDANCE used as a noun is very rare.

 Dictionary entry details 

• IMPEDANCE (noun)

Sense 1

Meaning:

A material's opposition to the flow of electric current; measured in ohms

Classified under:

Nouns denoting natural phenomena

Synonyms:

electric resistance; electrical resistance; impedance; ohmic resistance; resistance; resistivity

Hypernyms ("impedance" is a kind of...):

electrical phenomenon (a physical phenomenon involving electricity)

Hyponyms (each of the following is a kind of "impedance"):

ohmage (the ohmic resistance of a conductor)

 Context examples 

Issue associated with electrical impedance levels between device components or device and patient connections.

(Impedance Issue Associated with Medical Device, Food and Drug Administration)

Issue associated with lower than intended electrical impedance levels between device components or device and patient connections.

(Low Impedance Medical Device Problem, Food and Drug Administration)

Ohm is also used to measure impedance and reactance for complex resistance.

(Ohm, NCI Thesaurus)

Insulation failure manifests as low lead impedance either absolutely (below manufacturer's product specifications) or by a significant decrease from previously stable chronic values.

(Cardiac Lead Insulation Failure, NCI Thesaurus/ACC)

Issue associated with higher than intended electrical impedance levels between device components or device and patient connections.

(High Impedance Medical Device Problem, Food and Drug Administration)

Conductor failure manifests by high lead impedance either absolutely (above manufacturer's product specifications) or by a significant increase from previously stable chronic values.

(Cardiac Device Conductor Failure, NCI Thesaurus/ACC)

Impedance is greatest in fat tissue, which contains only 10-20% water, while lean body mass, which contains 70-75% water, allows the signal to pass much more easily.

(Bioelectric Impedance Analysis, NCI Thesaurus)

The pacing and/or sensing problem associated with high impedance due to a poor connection between a lead and generator caused by a loose set screw.

(Cardiac Device Set Screw Problem, NCI Thesaurus/ACC)

After administration in microsphere form, perflutren exhibits lower acoustic impedance than blood and improves ultrasound signaling.

(Perflutren, NCI Thesaurus)

Tests performed on the compound, using electrochemical impedance spectroscopy and surface analysis using X-ray photoelectron spectroscopy, confirmed the formation of positive bioactive elements.

(Mango leaf extract can stop ships from rusting, SciDev.Net)