magnetic field

Short definition from Wiktionary

Noun

1. 1
   A condition in the space around a magnet or electric current in which there is a detectable magnetic force and two magnetic poles are present.
2. 2
   A condition in the space around a magnet or electric current in which there is a detectable magnetic force and two magnetic poles are present: B-field.
3. 3
   A condition in the space around a magnet or electric current in which there is a detectable magnetic force and two magnetic poles are present: H-field.