the basic unit of magnetomotive force in the SI system, equal to the force produced by a current of one ampere flowing around one turn of a wire coil (1.257 gilberts): symbol, NI
See ampere-turn in American Heritage Dictionary 4
noun Abbr. At
A unit of magnetomotive force in the meter-kilogram-second system equal to the magnetomotive force around a path linking one turn of a conducting loop carrying a current of one ampere.