From Longman Dictionary of Contemporary Englishmagnetic northmagˌnetic ˈnorth noun [uncountable] SGthe northern direction shown by the needle on a compass → true north
Examples from the Corpus
magnetic north• The flow of a magnetic field is taken from magnetic north pole to magnetic south pole.• The compass needle points to the magnetic north pole.• Two people standing at distant points on the globe would have completely different ideas about where the magnetic north pole lay.• To all intents and purposes, though, magnetic north remains north.• True magnetic north, as measured by compasses, is several hundred miles to the east. 