The line through those points on the earth's surface at which magnetic dip is zero. The aclinic line is a particular case of an isoclinic line. Also called dip equator, magnetic equator. See also: Agonic Line, Earth. Found on https://www.encyclo.co.uk/local/20687
Magnetic equator, an imaginary line near the Equator, where a compass needle balances horizontally, the attraction of the north and south magnetic poles being equal Found on https://www.encyclo.co.uk/local/21221
an imaginary line on the surface of the earth, close and approximately parallel to the equator, connecting all those points over which a magnetic needle shows no inclination from the horizontal. Also called Found on https://www.infoplease.com/dictionary/aclinic-line