Magnetic Meridian
LINE BETWEEN THE EARTH'S POLES WITH THE SAME LONGITUDE
Lines of longitude; Line of longitude; Magnetic meridian; Meridian in geography; Geographic meridian; Geographical meridian; Circle of longitude; Standard meridian
A line formed on the earth's surface by the intersection therewith of a
plane passing through the magnetic axis. It is a line determined by the
direction of the compass needle. The meridians constantly change in
direction and correspond in a general way to the geographical meridians.