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ohm

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ohm

  [ohm]
Use ohm in a Sentence
–noun
the SI unit of electrical resistance, 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:
1861; named after G. S. Ohm

Related forms:
ohm⋅ic  [oh-mik] , adjective
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Ohm

  [ohm]
–noun
Ge⋅org Si⋅mon,  [gey-awrk zee-mawn] 1787–1854, German physicist.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ohm   (ōm)   
n.  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. See Table at measurement.

[After Georg Simon Ohm.]
ohm'ic adj., ohm'i·cal·ly adv.
Ohm   (ōm)   
German physicist noted for his contributions to mathematics, acoustics, and the measurement of electrical resistance.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

ohm [(ohm)]

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

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

ohm 
"unit of electrical resistance," 1867, in allusion to Ger. 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.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ohm
Pronunciation: 'Om
Function: noun
: the practical mks unit of electrical resistance equal to the resistance of a circuit in which a potentialdifference of one volt produces a current of one ampere —ohm·ic /'O-mik/ adjective
Ohm, Georg Simon (1789–1854), Germanphysicist. Ohm is best remembered for his discovery of a law of electricity that is now called Ohm's law in his honor. He summarized his discovery in a pamphlet published in 1827. His work exertedgreat influence on the theory and applications of current electricity. The physical unit measuring electrical resistance was officially designated the ohm by the Paris Electrical Congress of1881.
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

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.
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Science Dictionary
ohm   (ōm)  Pronunciation Key 
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
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

Ohm unit
The MKS unit of electrical resistance. One Ohm is the resistance of a conductor across which a potential difference of one Volt produces a current of one Ampere. Named after Georg Simon Ohm.
(2003-12-02)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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Encyclopedia

ohm

abbreviation Omega, unit of electrical resistance in the metre-kilogram-second system, named in honour of the 19th-century German physicist Georg Simon Ohm. It is equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere (1Omega = 1 V/A); or, the resistance in which one watt of power is dissipated when one ampere flows through it. Ohm's law (q.v.) states that resistance equals the ratio of the potential difference to current, and the ohm, volt, and ampere are the respective fundamental units used universally for expressing quantities.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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