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• coulomb
  coulomb

  noun

  the standard unit of quantity of electricity in the International System of Units (SI), equal to the quantity of charge transferred in one second across a conductor in which there is a constant current of one ampere. C
• Coulomb
  Coulomb

  noun

  Charles Augustin de 1736–1806, French physicist and inventor.

coulomb

¹ American  

[koo-lom, -lohm, koo-lom, -lohm] / ˈku lɒm, -loʊm, kuˈlɒm, -ˈloʊm /

noun

1. Electricity. the standard unit of quantity of electricity in the International System of Units (SI), equal to the quantity of charge transferred in one second across a conductor in which there is a constant current of one ampere. C

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Coulomb ² American  

[koo-lom, -lohm, koo-lom, -lohm, koo-lawn] / ˈku lɒm, -loʊm, kuˈlɒm, -ˈloʊm, kuˈlɔ̃ /

noun

1. Charles Augustin de 1736–1806, French physicist and inventor.

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Coulomb ¹ British  

/ kulɔ̃, ˈkuːlɒm /

noun

1. Charles Augustin de (ʃarl oɡystɛ̃ də). 1736–1806, French physicist: made many discoveries in the field of electricity and magnetism

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coulomb ² British  

/ ˈkuːlɒm /

noun

1.  C.  the derived SI unit of electric charge; the quantity of electricity transported in one second by a current of 1 ampere

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Coulomb ¹ Scientific  

1. French physicist who was a pioneer in the study of magnetism and electricity. He is best known for the formulation of Coulomb's law, which he developed as a result of his investigations of Joseph Priestley's work on electrical repulsion. Coulomb also established a law governing the attraction and repulsion of magnetic poles. The coulomb unit of electric charge is named for him.

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coulomb ² Scientific  

/ ko̅o̅′lŏm′,ko̅o̅′lōm′ /

1. The SI derived unit used to measure electric charge. One coulomb is equal to the quantity of charge that passes through a cross-section of a conductor in one second, given a current of one ampere.

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Etymology

Origin of coulomb

First recorded in 1880–85; after Coulomb

Example Sentences

See Examples For:

coulomb Coulomb

For both the ampere and the coulomb, the method of measuring force between conductors is the most accurate in practice.

From Textbooks ● Aug. 12, 2015

This also provides us with a method for measuring the coulomb.

From Textbooks ● Aug. 12, 2015

An ampere is the flow of one coulomb through an area in one second.

From Textbooks ● Aug. 12, 2015

Because both qubits are positively charged, their motion is strongly coupled electrically through a phenomenon known as mutual coulomb repulsion.

From Scientific American ● Oct. 9, 2012

CAPACITY—K.—The farad is that capacity of a body, say a Leyden jar or condenser, which a coulomb of electricity will charge to the potential of a volt.

From The Story of Electricity by John Munro

In physics, interactions such as gravity and the Coulomb force are known as central forces because they act along the line connecting the centers of two bodies.

From Science Daily ● Oct. 21, 2025

"The Coulomb diamond is like a fingerprint that helps identify the unique 'personality' of each quantum dot," points out Tomohiro Otsuka, an associate professor at Tohoku University and corresponding author of the paper.

From Science Daily ● Nov. 26, 2024

In most cases, the exciton pairs are bound by electrical, or electrostatic, forces, also known as Coulomb interactions.

From Science Daily ● Oct. 5, 2023

One might say that screening makes the Coulomb force a short range force rather than long range.

From Textbooks ● Aug. 12, 2015

Coulomb found that not only iron, but all substances are more or less magnetic, and Faraday showed in 1845 that while some are attracted by a magnet others are repelled.

From The Story of Electricity by John Munro