Meaning

2 senses
  1. The difference, expressed in degrees, between the direction a magnetic compass needle points and true or astronomical north; magnetic declination.

  2. Differences, expressed in degrees, between magnetic north directions and the direction a magnetic compass points, owing to local magnetic interferences; magnetic deviation.

Forms

plural: compass deflections

See also

neighbours in the dictionary
compass deflection — meaning, examples, forms, synonyms | Krumeto