Definition of "ampere" []

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

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The ampere is the unit of electric current in the International System of Units (SI)."
• "The unit of current intensity is called ampere = A in honour of the French physicist Marie Andr Ampre (1775 - 1836)."
• "Dr. Phillips and other mandarins of metrology were gathered at Britain's Royal Society to debate an urgent question in the science of measurement — how to re-define the basic unit of mass, as well as other measurements such as the second, ampere, kelvin and mole."