impedance
noun
im·ped·ance
im-ˈpē-dᵊn(t)s 
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
Examples of impedance in a Sentence
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Through bioelectrical impedance analysis (BIA), a common non-invasive method of measuring the body's fat mass (FM), fat-free mass (FFM) and total body water (TBW), the researchers found that AuNPs were also able to target the right lipid cells.
—
New Atlas, 10 Feb. 2025
With a new impedance of 30Ω, the headphones can plug into a wide range of playback devices, without compromising sound quality.
—Mark Sparrow, Forbes, 24 Jan. 2025
Adaptive impedance Max supported sampling: PCM: Up to 96kHz/16-bit.
—Mark Sparrow, Forbes, 22 Jan. 2025
Most amplifiers control voltage instead of current, but the link between current and voltage is made via the impedance of the drive unit, which will vary depending on temperature, frequency and the coil’s position inside the magnet.
—Mark Sparrow, Forbes, 15 Jan. 2025
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New Atlas, 10 Feb. 2025
With a new impedance of 30Ω, the headphones can plug into a wide range of playback devices, without compromising sound quality.
—Mark Sparrow, Forbes, 24 Jan. 2025
Adaptive impedance Max supported sampling: PCM: Up to 96kHz/16-bit.
—Mark Sparrow, Forbes, 22 Jan. 2025
Most amplifiers control voltage instead of current, but the link between current and voltage is made via the impedance of the drive unit, which will vary depending on temperature, frequency and the coil’s position inside the magnet.
—Mark Sparrow, Forbes, 15 Jan. 2025
See all Example Sentences for impedance
Dictionary Entries Near impedance
Cite this Entry
“Impedance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impedance. Accessed 18 Feb. 2025.
Copy CitationMedical Definition
impedance
noun
im·ped·ance
im-ˈpēd-ᵊn(t)s
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
: the ratio of the pressure to the volume displacement at a given surface in a sound-transmitting medium
3
: opposition to blood flow in the circulatory system
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