Ampere definition | Dictionary.com

am⋅pere

[am-peer, am-peer]

–noun Electricity.

the base SI unit of electrical current, equivalent to one coulomb per second, formally defined to be the constant current which if maintained in two straight parallel conductors of infinite length, of negligible circular cross section, and placed one meter apart in vacuum, would produce between these conductors a force equal to 2 × 10⁻⁷ newton per meter of length. Abbreviation: A, amp.

Also, ampère.

Origin:
1881; named after A. M. Ampère

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Language Translation for : Ampere

Spanish:

amperio,

German:

das Ampere (A),

Japanese:

アンペア

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Am⋅père

[am-peer; Fr. ahn-per]

–noun

An⋅dré Ma⋅rie [ahn-drey muh-ree; Fr. ahn-drey ma-ree]

, 1775–1836, French physicist.

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Cite This Source

am·pere (ām'pîr') Pronunciation Key
n. Abbr. A

A unit of electric current in the meter-kilogram-second system. It is the steady current that when flowing in straight parallel wires of infinite length and negligible cross section, separated by a distance of one meter in free space, produces a force between the wires of 2 × 10^-7 newtons per meter of length.
A unit in the International System specified as one International coulomb per second and equal to 0.999835 ampere. See Table at measurement.

[After André Marie Ampère.]

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

Am·père (ām'pîr, äɴ-pěr') Pronunciation Key
French physicist and mathematician who formulated Ampère's law, a mathematical description of the magnetic field produced by a current-carrying conductor.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source

ampere

1881, "the current that one volt can send through one ohm," from Fr. ampère, from André M. Ampère (1775-1836), Fr. physicist. Shortened form amp is attested from 1886.

Online Etymology Dictionary, © 2001 Douglas Harper
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ampere
noun
1.	a former unit of electric current (slightly smaller than the SI ampere)
2.	the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps"

WordNet® 3.0, © 2006 by Princeton University.
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ampere (ām'pîr') Pronunciation Key
The SI unit used to measure electric current. Electric current through any given cross-section (such as a cross-section of a wire) may be measured as the amount of electrical charge moving through that cross-section in one second. One ampere is equal to a flow of one coulomb per second, or a flow of 6.28 × 10¹⁸ electrons per second.

Ampère (ām'pîr', äm-pěr') Pronunciation Key
French mathematician and physicist who is best known for his analysis of the relationship between magnetic force and electric current. He formulated Ampère's law, which describes the strength of the magnetic field produced by the flow of energy through a conductor. The ampere unit of electric current is named for him.

Ampere unit, electronics
(Amp, A) The unit of electrical current flow. One Amp is the current that will flow through a one-ohm resistance when one Volt DC is applied across it.
(2004-01-18)

Ampere

Am`p[`e]re"\ ([aum]N`p[^a]r"), Ampere \Am*pere"\ ([a^]m*p[=a]r"), n. [From the name of a French electrician.] (Elec.) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international amp[`e]re.

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