deviation Meaning, Definition & Usage

  1. noun a variation that deviates from the standard or norm
    difference; divergence; departure.
    • the deviation from the mean
  2. noun the difference between an observed value and the expected value of a variable or function
  3. noun the error of a compass due to local magnetic disturbances
  4. noun deviate behavior
    deviance.
  5. noun a turning aside (of your course or attention or concern)
    digression; deflexion; deflection; diversion; divagation.
    • a diversion from the main highway
    • a digression into irrelevant details
    • a deflection from his goal

WordNet

De`vi*a"tion noun
Etymology
LL. deviatio: cf. F. déviation.
Definitions
  1. 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.
  2. The state or result of having deviated; a transgression; an act of sin; an error; an offense.
  3. (Com.) 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.

Webster 1913