Ampere

am·pere  (mpîr)

n. Abbr. A

1. 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.

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

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[After André Marie Ampère.]

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ampere [am-pair]

Noun

the basic unit of electric current [after A M Ampère, French physicist & mathematician]

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ampere  (mpîr)

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.

Thesaurus

Noun	1.	ampere - a former unit of electric current (slightly smaller than the SI ampere) international ampere current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time
	2.	ampere - the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps" amp, A current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time milliampere, mA - one thousandth of an ampere abamp, abampere - a unit of current equal to 10 amperes