: the practical meter-kilogram-second unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere
1
: of or relating to an ohm : measured in ohms
2
: relating to a material or an electrical contact for which the electrical resistance is not dependent on the applied voltage
ohmically
adverb
Free of stuff between its electrodes, a vacuum tube can operate at currents that would ohmically toast a transistor's semiconducting innards.
—
Charles Day, Physics Today, July 2002
Charles Day, Physics Today, July 2002
Examples of ohm in a Sentence
Recent Examples on the Web
Juhi Wadia, PC Magazine, 17 Apr. 2026
That's why speakers with lower impedance, rated in ohms, can generally be more difficult to amplify.
—Ryan Waniata, Wired News, 1 Apr. 2026
In addition, the length will, in part, determine the necessary impedance, or maximum ohm load and resistance of a speaker cable.
—Bestreviews, Mercury News, 9 Jan. 2026
Nominal 4 ohm impedance and 85 dB sensitivity means the Metas can handle a big-boy amp, but will do a fine job driven by a modestly powered integrated.
—Robert Ross, Robb Report, 26 Mar. 2025
The process leads to a tin-gold alloy with 270 ohm-micrometer resistance and indium-gold with 190 ohm-micrometer.
—IEEE Spectrum, 14 Dec. 2021
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Noun
Its angled 42mm transducers mimic high-end speaker imaging, while its ultra-lightweight 150-ohm voice coil ensures distortion-free clarity across music and games.
—Juhi Wadia, PC Magazine, 17 Apr. 2026
That's why speakers with lower impedance, rated in ohms, can generally be more difficult to amplify.
—Ryan Waniata, Wired News, 1 Apr. 2026
In addition, the length will, in part, determine the necessary impedance, or maximum ohm load and resistance of a speaker cable.
—Bestreviews, Mercury News, 9 Jan. 2026
Nominal 4 ohm impedance and 85 dB sensitivity means the Metas can handle a big-boy amp, but will do a fine job driven by a modestly powered integrated.
—Robert Ross, Robb Report, 26 Mar. 2025
The process leads to a tin-gold alloy with 270 ohm-micrometer resistance and indium-gold with 190 ohm-micrometer.
—IEEE Spectrum, 14 Dec. 2021
Cite this Entry
“Ohm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ohm. Accessed 16 Jun. 2026.
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