geomagnetic pole
noun [ C ] physics uk/ˌdʒiː.əʊ.mæɡ.net.ɪk ˈpəʊl/ us/ˌdʒiː.oʊ.mæɡ.net̬.ɪk ˈpoʊl/
地磁极
one of two points on the earth's surface that are directly opposite each other, and that are at the north and south ends of the earth's magnetic field. Their position is always changing.
Compare: magnetic pole