ohm

O1H4M3
UK/əʊm/US/oʊm/

noun

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.

Less commonScrabble 8

Meanings

nounohm (plural ohms)

plural ohms

  1. 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.

    As the test light voltage touches terminal "C7", the module should switch, causing the ohmmeter to "overrange" if the meter is in the 1000-2000 ohms position.

    1992, Chilton's General Motors, page 7
    1 more example

    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.

    1900, Journal of the Franklin Institute, volume 149, page 461

Origin

  1. Proto-Germanic*awô“grandfather, paternal uncle”
  2. Proto-West Germanic*auhaim“maternal uncle”
  3. Englishohm

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”).

Full word history & related roots →

Translations

Arabic أُوم
  • أُوم (ʔōm)the derived unit of electrical resistance
Bulgarian ом
  • ом (om)the derived unit of electrical resistance
Catalan ohm
  • ohmthe derived unit of electrical resistance
Chinese Mandarin 歐姆 /欧姆
  • 歐姆 /欧姆 (ōumǔ)the derived unit of electrical resistance
Czech ohm
  • ohmthe derived unit of electrical resistance
Dutch ohm
  • ohmthe derived unit of electrical resistance
Esperanto omo
  • omothe derived unit of electrical resistance
Finnish ohmi
  • ohmithe derived unit of electrical resistance
French ohm
  • ohmthe derived unit of electrical resistance
German Ohm
  • Ohmthe derived unit of electrical resistance
Greek ωμ
  • ωμ (om)the derived unit of electrical resistance
Hebrew אוהם, אוֹם
  • אוהם (ohm)the derived unit of electrical resistance
  • אוֹם (om)the derived unit of electrical resistance
Icelandic óm
  • ómthe derived unit of electrical resistance
Indonesian ohm
  • ohmthe derived unit of electrical resistance
Irish óm
  • ómthe derived unit of electrical resistance
Italian ohm
  • ohmthe derived unit of electrical resistance
Japanese オーム
  • オーム (ōmu)the derived unit of electrical resistance
Korean 옴
  • 옴 (om)the derived unit of electrical resistance
Latvian oms
  • omsthe derived unit of electrical resistance
Malay ohm
  • ohmthe derived unit of electrical resistance
Māori wae parehiko
  • wae parehikothe derived unit of electrical resistance
Polish om, ohm
  • omthe derived unit of electrical resistance
  • ohmthe derived unit of electrical resistance
Portuguese ohm
  • ohmthe derived unit of electrical resistance
Russian ом
  • ом (om)the derived unit of electrical resistance
Spanish ohmio
  • ohmiothe derived unit of electrical resistance
Swedish ohm
  • ohmthe derived unit of electrical resistance
Tagalog omyo, om
  • omyothe derived unit of electrical resistance
  • omthe derived unit of electrical resistance
Thai โอห์ม
  • โอห์ม (oom)the derived unit of electrical resistance
Turkish om
  • omthe derived unit of electrical resistance
Ukrainian ом
  • ом (om)the derived unit of electrical resistance

Rhymes & wordplay

Rhymes with ohm

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Anagrams

Cite this entry
APA

ohm. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/ohm

MLA

“ohm.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ohm. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “ohm,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/ohm.

Source: ohm on Wiktionary, CC BY-SA 4.0.