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aclinic line

[ey-klin-ik]
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noun
  1. 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.
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Origin of aclinic line

1840–50; < Greek aklin(ḗs) not bending (a- a-6 + klin-, variant stem of klī́nein to bend) + -ic
Also called magnetic equator.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for aclinic line

aclinic line

noun
  1. another name for magnetic equator
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Word Origin

C19: aclinic, from Greek aklinēs not bending, from a- 1 + klinein to bend, lean
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012