# a marie ampère

## Ampère

[am-peer; French ahn-per]
noun
André Marie [ahn-drey muh-ree; French ahn-drey ma-ree] , 1775–1836, French physicist.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To a marie ampère
Collins
World English Dictionary
 ampere (ˈæmpɛə) —n 1. the basic SI unit of electric current; the constant current that, when maintained in two parallel conductors of infinite length and negligible cross section placed 1 metre apart in free space, produces a force of 2 × 10--7 newton per metre between them. 1 ampere is equivalent to 1 coulomb per second 2. a former unit of electric current (international ampere); the current that, when passed through a solution of silver nitrate, deposits silver at the rate of 0.001118 gram per second. 1 international ampere equals 0.999835 ampere [C19: named after André Marie Ampère]

 Ampère (ˈæmpɛə, French ɑ̃pɛr) —n André Marie (ɑ̃dre mari). 1775--1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

ampere
1881, "the current that one volt can send through one ohm," from Fr. ampère, from André-Marie Ampère (1775-1836), Fr. physicist. Shortened form amp is attested from 1886.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

ampere am·pere (ām'pēr')
n.
Abbr. A

1. A unit of electric current in the meter-kilogram-second system, equal to the current that, flowing in two parallel wires one meter apart, produces a force of 2 × 10-7 newtons per meter.

2. A unit in the International System specified as one International coulomb per second and equal to 0.999835 ampere.

The American Heritage® Stedman's Medical Dictionary
Cite This Source
American Heritage
Science Dictionary
 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.
The American Heritage® Science Dictionary