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See magnetic equator.
(General Physics) another name for magnetic equator
a•clin′ic line′(eɪˈklɪn ɪk)
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 magnetic equator.
[1840–50; < Greek aklin(ḗs) not bending + -ic]