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ohm

noun
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\ ˈōm How to pronounce ohm (audio) \

Definition of ohm

 (Entry 1 of 2)

: 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

Ohm

biographical name
\ ˈōm How to pronounce Ohm (audio) \

Definition of Ohm (Entry 2 of 2)

Georg Simon 1787–1854 German physicist
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Other Words from ohm

Noun

ohmic \ ˈō-​mik How to pronounce ohmic (audio) \ adjective
ohmically \ ˈō-​mi-​k(ə-​)lē How to pronounce ohmically (audio) \ adverb

Examples of ohm in a Sentence

Recent Examples on the Web: Noun Now flip the switch On and the meter should read less than one ohm. — Joseph Truini, Popular Mechanics, "How To Use a Digital Multimeter," 25 July 2019 Electrical continuity through the cord will have a resistance of .8 ohms or less. — Joseph Truini, Popular Mechanics, "How To Use a Digital Multimeter," 25 July 2019 In general, speakers with a lower rating like 4 ohms will need a more powerful receiver to drive them, while 8-ohm speakers, which are the most common, will work with most receivers. — Don Melanson, Popular Mechanics, "The Setup: Building a Great Home Entertainment System," 18 July 2018 Here are the specs for Sonos’ new product line: Sonos ZonePlayer 120 · Class-D Amplifier: Great sounding amplifier that is lightweight, small and very energy efficient · Output: 2x55W RMS (55W power into 8 ohms, TDN+N — Eliot Van Buskirk, WIRED, "Sonos Improves Multi-Room Digital Audio System," 5 Aug. 2008

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ohm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ohm

Noun

1861, in the meaning defined above

History and Etymology for ohm

Noun

Georg Simon Ohm

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Statistics for ohm

Last Updated

19 Nov 2019

Time Traveler for ohm

The first known use of ohm was in 1861

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More Definitions for ohm

ohm

noun
How to pronounce Ohm (audio)

English Language Learners Definition of ohm

technical : a unit for measuring electrical resistance

See the full definition for ohm in the English Language Learners Dictionary

ohm

noun
\ ˈōm How to pronounce ohm (audio) \

Medical Definition of ohm

: the practical mks unit of electrical resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere

Other Words from ohm

ohmic \ ˈō-​mik How to pronounce ohmic (audio) \ adjective

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More from Merriam-Webster on ohm

Rhyming Dictionary: Words that rhyme with ohm

Spanish Central: Translation of ohm

Nglish: Translation of ohm for Spanish Speakers

Britannica.com: Encyclopedia article about ohm

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