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# ohm

[ohm] /oʊm/
noun
1.
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
1861
First recorded in 1861; named after G. S. Ohm
Related forms
ohmic
[oh-mik] /ˈoʊ mɪk/ (Show IPA),

## Ohm

[ohm] /oʊm/
noun
1.
Georg Simon
[gey-awrk zee-mawn] /geɪˈɔrk ˈzi mɔn/ (Show IPA),
1787–1854, German physicist.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for ohm
Historical Examples
• Wheatstone by his knowledge of ohm's law and the electro-magnet was probably able to enlighten him.

J. Munro
• We must therefore have a standard for the ohm, which is the measure of resistance.

J. S. Zerbe
• In applying this illustration to the voltaic cell, we make use of ohm's law.

Willis Eugene Tower
• One of these methods depends upon an application of ohm's law.

Willis Eugene Tower
• This furlough was perhaps the most important event in ohm's life.

Brother Potamian
• ohm continued his work at Nuremberg for more than fifteen years.

Brother Potamian
• ohm's work at once attracted the attention that it deserved in England.

Brother Potamian
• Up to the very last day of his life, ohm continued his lectures.

Brother Potamian
• ohm is remembered as a teacher rather than as an educational administrator.

Brother Potamian
• The success of ohm as a teacher was recognized on all sides.

Brother Potamian
British Dictionary definitions for ohm

## ohm

/əʊm/
noun
1.
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 Ω
Word Origin
C19: named after Georg Simon Ohm

## Ohm

/əʊm/
noun
1.
Georg Simon (ˈɡeːɔrk ˈziːmɔn). 1787–1854, German physicist, who formulated the law named after him
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ohm
n.

unit of electrical resistance, 1867, in recognition of German physicist Georg S. Ohm (1789-1854), who determined the law of the flow of electricity. Originally proposed as ohma (1861) as a unit of voltage. Related: ohmage; ohmic; ohmeter.

Online Etymology Dictionary, © 2010 Douglas Harper
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ohm in Medicine

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
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ohm in Science
 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.
 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
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ohm in Culture
ohm [(ohm)]

The unit of electrical resistance, named after the nineteenth-century German physicist Georg Ohm.

The New Dictionary of Cultural Literacy, Third Edition
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### Word Value for ohm

8
8
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