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ohm
[ ohm ]
/ oʊm /
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noun
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
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Origin of ohm
First recorded in 1861; named after G. S. Ohm
OTHER WORDS FROM ohm
ohm·ic [oh-mik], /ˈoʊ mɪk/, adjectiveWords nearby ohm
Ohio, Ohio buckeye, Ohio River, Öhlenschläger, Ohlin, ohm, ohmage, ohmic, ohmic resistance, ohmmeter, O.H.M.S.
Other definitions for ohm (2 of 2)
Ohm
[ ohm ]
/ oʊm /
noun
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. 2021
How to use ohm in a sentence
British Dictionary definitions for ohm (1 of 2)
ohm
/ (əʊm) /
noun
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 ampereSymbol: Ω
Word Origin for ohm
C19: named after Georg Simon Ohm
British Dictionary definitions for ohm (2 of 2)
Ohm
/ (əʊm) /
noun
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
Medical definitions for ohm
ohm
[ ōm ]
n. Symbol Ω
A unit of electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for ohm (1 of 2)
ohm
[ 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)
Ohm
Georg Simon 1789-1854
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
[ (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.