ohm

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ohm

/əʊm/ UK
/oʊm/ US

Rhymes with -əʊm

Where it comes from

Named after Bavarian physicist Georg Ohm. A German surname, first recorded in the 12th century, from German Ohm (“uncle”), from Proto-West Germanic *auhaim (“maternal uncle”), from or related to Proto-Germanic *awô (“grandfather, paternal uncle”) + *haimaz (“home”). Doublet of oom and of dialectal eam (“uncle”).

noun ohms

In the International System of Units, the derived unit of electrical resistance; the electrical resistance of a device across which a potential difference of one volt causes a current of one ampere. If the volt, ampere and ohm were taken as the absolute units, the practical units would be the ampere, begohm and begavolt, names just as convenient as ampere, coulomb and farad.

Thesaurus

Closest in meaning: milliammeter, electrical resistance, resistivity, statohm, siemens, ohm's law, ohmic resistance, volt, specific resistance, impedance, abmho, transimpedance, resistance, henry, watt, electroresistance

Translations

Every language

noun the derived unit of electrical resistance

Español	ohmio
한국어	옴 om
日本語	オーム ōmu
中文	歐姆 /欧姆 ōumǔ
Português	ohm
Français	ohm
Deutsch	Ohm
Italiano	ohm
Ελληνικά	ωμ om
Русский	ом om
العربية	أُوم ʔōm
עברית	אוהם ohm, אוֹם om

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MLA

"ohm." Wiktionary, via Micwyn, micwyn.com/word/ohm. Accessed 6 Nov. 2026.

APA

ohm. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/ohm

Chicago

"ohm." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/ohm.

BibTeX

@misc{ohm_2026,
  title = {ohm},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ohm},
  urldate = {2026-11-06}
}