noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/əʊm/
US:/oʊm/
Southern-England:Recorded audio is listed in the source snapshot.
US:Recorded audio is listed in the source snapshot.
rhymes with -əʊm
CMU ARPABET:OW1 M
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 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.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
German physicist who formulated Ohm's law (1787-1854)
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Georg Simon Ohm
Antonyms: none provided
Broader terms: physicist
3
noun
Meaning 3
a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: resistance unit
History
Etymology
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”).
Across languages
Translations
41 source translations are retained for this English entry.
Arabic:
أُوم
(ʔōm)
— the derived unit of electrical resistance
Armenian:
օհմ
(ōhm)
— the derived unit of electrical resistance
Belarusian:
ом
(om)
— the derived unit of electrical resistance
Bulgarian:
ом
(om)
— the derived unit of electrical resistance
Catalan:
ohm
— the derived unit of electrical resistance
Chinese Mandarin:
歐姆 /欧姆
(ōumǔ)
— the derived unit of electrical resistance
Czech:
ohm
— the derived unit of electrical resistance
Dutch:
ohm
— the derived unit of electrical resistance
Esperanto:
omo
— the derived unit of electrical resistance
Finnish:
ohmi
— the derived unit of electrical resistance
French:
ohm
— the derived unit of electrical resistance
Georgian:
ომი
(omi)
— the derived unit of electrical resistance
German:
Ohm
— the derived unit of electrical resistance
Greek:
ωμ
(om)
— the derived unit of electrical resistance
Hebrew:
אוהם
(ohm)
— the derived unit of electrical resistance
Hebrew:
אוֹם
(om)
— the derived unit of electrical resistance
Icelandic:
óm
— the derived unit of electrical resistance
Indonesian:
ohm
— the derived unit of electrical resistance
Interlingua:
ohm
— the derived unit of electrical resistance
Irish:
óm
— the derived unit of electrical resistance
Italian:
ohm
— the derived unit of electrical resistance
Japanese:
オーム
(ōmu)
— the derived unit of electrical resistance
Khmer:
អូម
(ʼoum)
— the derived unit of electrical resistance
Korean:
옴
(om)
— the derived unit of electrical resistance
Latvian:
oms
— the derived unit of electrical resistance
Macedonian:
ом
(om)
— the derived unit of electrical resistance
Malay:
ohm
— the derived unit of electrical resistance
Māori:
wae parehiko
— the derived unit of electrical resistance
Polish:
om
— the derived unit of electrical resistance
Polish:
ohm
— the derived unit of electrical resistance
Portuguese:
ohm
— the derived unit of electrical resistance
Russian:
ом
(om)
— the derived unit of electrical resistance
Serbo-Croatian:
ом
— the derived unit of electrical resistance
Serbo-Croatian:
om
— the derived unit of electrical resistance
Spanish:
ohmio
— the derived unit of electrical resistance
Swedish:
ohm
— the derived unit of electrical resistance
Tagalog:
omyo
— the derived unit of electrical resistance
Tagalog:
om
— the derived unit of electrical resistance
Thai:
โอห์ม
(oom)
— the derived unit of electrical resistance
Turkish:
om
— the derived unit of electrical resistance
Ukrainian:
ом
(om)
— the derived unit of electrical resistance
