The term magnetic dipole originally referred to the fact that a magnet has two poles and, because of these two poles, experiences a torque in a magnetic field if its axis is not along a magnetic flux line of the field. It is now generalized to include electric circuits which, because of the current, also experience torques in magnetic fields. [McGraw-Hill Concise Encyclopedia of Science & Technology]
See Also
energy flux
flux
flux of virtual photons
virtual particle flux
virtual photon flux