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Word: magnetic variation (lookup usage) (lookup stats)


Meaning:

Noun:

  • cartography In cartography, the annual change in direction of the horizontal component of the Earth?s magnetic field.
  • military|nautical|navigation In navigation, at a given place and time, the horizontal angle between the true north and magnetic north measured east or west according to whether magnetic north lies east or west of true north.

Source: Wiktionary | Src Info »