- the act of deviating.
- departure from a standard or norm.
- the difference between one of a set of values and some fixed value, usually the mean of the set.
- the error of a magnetic compass, as that of a ship, on a given heading as a result of local magnetism.
- Optics.
- the bending of rays of light away from a straight line.
- angle of deviation.
- departure or divergence from an established dogma or ideology, especially a Communist one.
- an act or result of deviating
- the difference between an observed value in a series of such values and their arithmetic mean
- the error of a compass due to local magnetic disturbances
