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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

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

From Textbooks ● Aug. 12, 2015

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

From Textbooks ● Aug. 12, 2015

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

Both marbles want to settle at the bottom of the bowl, but the coulomb repulsion causes them to come to rest on opposite sides, each a bit up the slope.

From Scientific American ● Oct. 9, 2012

Farad is the capacity defined by the condition that a coulomb in a condenser, whose capacity is a farad, establishes a difference of potential of a volt between the armatures.

From Scientific American Supplement, No. 312, December 24, 1881 by Various

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

This innovation allowed them to observe the Coulomb diamond, a key characteristic of quantum dots, providing insights into the behavior of electrons trapped inside.

From Science Daily ● Nov. 26, 2024

Now, in a new study in Nature Physics, Caltech researchers report detecting excitons that are not bound via Coulomb forces but rather by magnetism.

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

This law was proved by Coulomb by means of an instrument known as Coulomb's Torsion Balance, and I must refer the reader to any work on electricity for a full establishment of this law.

From Aether and Gravitation by Hooper, William George