magnetic deviation

/M AE0 G N EH1 T IH0 K D IY0 V IY0 EY0 SH AH0 N/
noun
  1. 1

    The difference in angle between magnetic north and the north shown by a compass at any given location and time, caused by interference from local magnetic fields.

  2. 2

    Magnetic declination.

  3. 3

    Used other than figuratively or idiomatically: see magnetic, deviation.

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