When you always go to the store on Monday and one week you go to the store on Tuesday, this is an example of a deviation.
- sharp divergence from normal behavior
- divergence from the official ideology or policies of a political party, esp. a Communist party
- the deflection of a magnetic compass needle due to magnetic influences; specif., on a ship, such deflection caused by the ship's own magnetic properties
- Statistics the amount by which a number differs from an average or other comparable value
Origin of deviationMiddle English deviacion from Late Latin deviatio
- a. The act of deviating or turning aside.b. An instance of this: “We made so many deviations up and down lanes … that I was quite tired, and very glad, when we saw Yarmouth” ( Charles Dickens )
- a. Divergence from an accepted idea, policy, or norm of behavior: “Freud, as the leader of a powerful new movement, could not bear much deviation from his own central ideas” ( Joseph Epstein )b. An instance of this; an abnormality or departure from a norm: “Vice was a deviation from our nature” ( Henry Fielding )
- Deflection of a compass needle caused by local magnetic influence, especially on a ship.
- Statistics The difference, especially the absolute difference, between one number in a set of data and the mean of that set of data.
- The act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty.
- The state or result of having deviated; a transgression; an act of sin; an error; an offense.
- (contract law) The voluntary and unnecessary departure of a ship from, or delay in, the regular and usual course of the specific voyage insured, thus releasing the underwriters from their responsibility.
- (Absolute Deviation) The shortest distance between the center of the target and the point where a projectile hits or bursts.
- (statistics) For interval variables and ratio variables, a measure of difference between the observed value and the mean.
- (metrology) The signed difference between a value and its reference value.
From Middle French deviation, from Medieval Latin deviatio