magnetic variation
English
Noun
magnetic variation (plural magnetic variations)
- (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.
- (cartography) In cartography, the annual change in direction of the horizontal component of the Earth’s magnetic field.
Translations
nautical term
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See also
- magnetic declination
References
- JP 1-02 Department of Defense Dictionary of Military and Associated Terms