Real Dictionary

ampere
countable noun: An ampere is a unit which is used for measuring electric current. The abbreviation amp is also used.

Ampère in American English
André Maˈrie (ɑ̃dʀeɪ maˈʀi) 1775-1836; Fr. physicist & mathematician
the basic unit of electric current intensity, equal, in the MKS system, to a rate of flow of charge in a conductor or conducting medium of one coulomb per second and, in the SI system, to a constant current that, if maintained in two straight parallel con
noun: 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 mete

Ampère in British English
noun: André Marie (ɑ̃dre mari ). 1775–1836, French physicist and mathematician, who made major discoveries in the fields of magnetism and electricity
noun: 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 in Electrical Engineering
noun: An ampere is a measure of electrical current.