ˈamˌpi(ə)r, ˈaam-, -iə noun
( -s )
Etymology: after André M. Ampère died 1836 French physicist
1. : the practical mks unit of electric current that is equivalent to a flow of one coulomb per second or to the steady current produced by one volt applied across a resistance of one ohm and that is taken as the standard in the U.S. : 1/10 abampere
2. : a unit of electric current equal to .99985 ampere and formerly taken as the standard — called also international ampere