ohm
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. Symbol: Ω
Origin of ohm
1Other words from ohm
- ohm·ic [oh-mik], /ˈoʊ mɪk/, adjective
Words Nearby ohm
Other definitions for Ohm (2 of 2)
Ge·org Si·mon, [gey-awrk-zee-mawn] /geɪˈɔrk ˈzi mɔn/ 1787–1854, German physicist.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use ohm in a sentence
After much manœuvring about the Lahn, no way seemed possible for them save by crossing the ohm.
The Political History of England - Vol. X. | William HuntHis paper abounds with simple and practical formula: for the calculation of currents and resistances by the law of ohm.
Heroes of the Telegraph | J. MunroIf R be still further increased, ohm's law applies, and the current diminishes.
At Portrush the resistance of a mile, including the return by earth and the ground rails, is actually about 0.23 ohm.
The resistance of dry cells varies from less than 0.1 of an ohm when new to several ohms when old.
Physics | Willis Eugene Tower
British Dictionary definitions for ohm (1 of 2)
/ (əʊm) /
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: Symbol: Ω
Origin of ohm
1British Dictionary definitions for Ohm (2 of 2)
/ (əʊm) /
Georg Simon (ˈɡeːɔrk ˈziːmɔn). 1787–1854, German physicist, who formulated the law named after him
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
Scientific definitions for ohm (1 of 2)
[ ōm ]
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.
Scientific definitions for Ohm (2 of 2)
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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for ohm
[ (ohm) ]
The unit of electrical resistance, named after the nineteenth-century German physicist Georg Ohm.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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