The space around a magnet through which it exerts magnetic force; a field of force surrounding a permanent magnet, electrical current, or a moving charged particle; called also magnetic flux and field of magnetic force.
The area of force which exists around a moving charge, e.g. an electron. Electrons flowing through a conductor (e.g. wire) produce a force in the area surrounding the conductor referred to as a magnetic field.
An invisible force that exist around all magnetic or electric currents