ohm

¹ American  

[ohm] / oʊm /

noun

1. the standard unit of electrical resistance in the International System of Units (SI), formally defined to be the electrical resistance between two points of a conductor when a constant potential difference applied between these points produces in this conductor a current of one ampere. The resistance in ohms is numerically equal to the magnitude of the potential difference. Ω

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Ohm ² American  

[ohm] / oʊm /

noun

1. Georg Simon, 1787–1854, German physicist.

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Ohm ¹ British  

/ əʊm /

noun

1. Georg Simon (ˈɡeːɔrk ˈziːmɔn). 1787–1854, German physicist, who formulated the law named after him

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ohm ² British  

/ əʊm /

noun

1.  Ω.  the derived SI unit of electrical resistance; the resistance between two points on a conductor when a constant potential difference of 1 volt between them produces a current of 1 ampere

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ohm ¹ Scientific  

/ ōm /

1. The SI derived unit used to measure the electrical resistance of a material or an electrical device. One ohm is equal to the resistance of a conductor through which a current of one ampere flows when a potential difference of one volt is applied to it.

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Ohm ² Scientific  

1. German physicist who discovered the relationship between voltage, current, and resistance in an electrical circuit, now known as Ohm's law. The ohm unit of electrical resistance is named for him.

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ohm Cultural  

1. The unit of electrical resistance, named after the nineteenth-century German physicist Georg Ohm.

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Other Word Forms

• ohmic adjective

Etymology

Origin of ohm

First recorded in 1861; named after G. S. Ohm

Example Sentences

After breaking into Belfort’s account, the hacker transferred large quantities of ohm, a popular cryptocurrency token, to a separate wallet — a publicly visible transaction that Belfort could do nothing to reverse.

From Seattle Times

Sometimes I just let the water pummel the top of my head and listen to the ohm of the fan’s whir, losing myself in the hug of its hum.

From Washington Post

Last July 4, regulars joined each other online to “ohm from home.”

From Seattle Times

Because of this, the quantum Hall effect is used to confirm the accuracy of the ohm, the unit of electrical resistance.

From Nature

Topological insulators are so insensitive to disorder that they were previously used to define the unit of resistance: the ohm.

From Nature