Definition of deviation
: an act or instance of deviating: such asa navigation : deflection of the needle of a compass caused by local magnetic influences (as in a ship)b mathematics : the difference between a value in a frequency distribution and a fixed number (such as the mean)c : departure from an established ideology or party line deviation from Communist orthodoxyd : noticeable or marked departure from accepted norms (see norm 2) of behavior
deviationismplay \-shə-ˌni-zəm\ noun
deviationistplay \-sh(ə-)nist\ noun or adjective
Examples of deviation in a sentence
There have been slight deviations in the satellite's orbit.
Having juice instead of coffee was a deviation from his usual routine.
The pattern's deviation from the norm is significant.
Origin and Etymology of deviation
First Known Use: 15th century
DEVIATION Defined for English Language Learners
Definition of deviation for English Language Learners
: an action, behavior, or condition that is different from what is usual or expected
: the difference between the average of a group of numbers and a particular number in that group
Medical Definition of deviation
: an act or instance of diverging from an established way or in a new direction: asa: evolutionary differentiation involving interpolation of new stages in the ancestral pattern of morphogenesisb: noticeable or marked departure from accepted norms of behavior
Seen and Heard
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