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


the standard unit of quanitity 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. Abbreviation: C



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Origin of coulomb

First recorded in 1880–85; after Coulomb

Definition for coulomb (2 of 2)

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


Charles Au·gus·tin de [sharl oh-gy-stan duh], /ʃarl oʊ güˈstɛ̃ də/, 1736–1806, French physicist and inventor. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for coulomb

British Dictionary definitions for coulomb (1 of 2)

/ (ˈkuːlɒm) /


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

Word Origin for coulomb

C19: named after Charles Augustin de Coulomb

British Dictionary definitions for coulomb (2 of 2)

/ (ˈkuːlɒm, French kulɔ̃) /


Charles Augustin de (ʃarl oɡystɛ̃ də). 1736–1806, French physicist: made many discoveries in the field of electricity and magnetism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for coulomb

[ kōōlŏm′, -lōm′ ]


The unit of electrical charge in the meter-kilogram-second system equal to the quantity of charge transferred in one second by a steady current of one ampere.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for coulomb (1 of 2)

[ kōōlŏm′, kōōlōm′ ]

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.

Scientific definitions for coulomb (2 of 2)

Charles Augustin de 1736-1806

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.