ohm

noun

\ˈōm

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

Definition of Ohm (Entry 2 of 2)

Georg Simon 1787–1854 German physicist

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Recent Examples on the Web: Noun

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<0.02%)* · — 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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The first known use of ohm was in 1861

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More Definitions for ohm

ohm

noun

English Language Learners Definition of ohm

: a unit for measuring electrical resistance

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

ohm

noun

\ˈōm

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