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Definition of ohm

ohm

/oʊm/
ohm
Plural:ohms
•
Adjective:ohmic
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ohm Lexical Profile

ohm Game Scores & Validity

• noun

1

The standard SI derived unit of electrical resistance, equal to the resistance of a conductor between two points when a constant potential difference of one volt produces a current of one ampere (symbol: Ω).

Example

"The technician used a multimeter to verify that the resistor measured exactly one hundred ohms."

Word Nuance & Usage

Do not confuse 'ohm' (the unit of electrical resistance) with 'om' (also spelled 'aum'), the sacred syllable chanted in Hinduism, Buddhism, and yoga.

• Rhymes for ohm

• Nearby Words

oh my god
ohio buckeye
ohio river
ohm
ohmmeter
oi
oiapoque

Word Origin & Etymology

Coined in the 1860s in honor of the German physicist Georg Simon Ohm (1789–1854), who formulated Ohm's law regarding electrical current, voltage, and resistance.

Cite this Entry

Wordmom. (2026). Definition of Ohm. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ohm
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