What is another word for magnetic variation?
Pronunciation: [maɡnˈɛtɪk vˌe͡əɹɪˈe͡ɪʃən] (IPA) 
Magnetic variation is a term that refers to the measurement of discrepancy between magnetic north and true north. Synonyms for magnetic variation could include magnetic deviation, magnetic declination, compass variation, and geomagnetic angle. These terms all refer to the concept of the difference between the two types of north. Magnetic deviation refers to the difference in the way a compass needle points due to local variations in the Earth's magnetic field. Magnetic declination is simply another way to say magnetic variation. Compass variation is another term for magnetic deviation, and geomagnetic angle is yet another term that refers to the angle between the Earth's magnetic field and the horizontal.
