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# ohm

[ohm]
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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 .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}ohm

First recorded in 1861; named after G. S. Ohm
Related formsohm·ic [oh-mik] /ˈoʊ mɪk/, adjective

# O.H.M.S.

1. On His Majesty's Service; On Her Majesty's Service.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for ohms

### Historical Examples

• #### The resistance of the secondary wire should be from 100 to 150 ohms.

Scientific American, Volume XLIII., No. 25, December 18, 1880

Various

• #### How far away is the break in the wire if the latter has a resistance of 80 ohms to the mile?

Physics

Willis Eugene Tower

• #### What current will flow in the circuit if the external resistance is 2.5 ohms?

Physics

Willis Eugene Tower

• #### The separate resistances of two incandescent lamps are 200 ohms and 70 ohms.

Physics

Willis Eugene Tower

• #### A pair of magnets of about 50 ohms are mounted on this support.

British Dictionary definitions for ohms

# OHMS

abbreviation for (in Britain and the dominions of the Commonwealth)
1. On Her (or His) Majesty's Service

# ohm

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 ampereSymbol: Ω

## Word Origin

C19: named after Georg Simon Ohm

# Ohm

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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

# 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

ohms in Medicine

# ohm

(ōm)
n. Symbol Ω
1. 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.

ohms in Science

# ohm

[ōm]
1. 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.