# Deviation's

## deviation

[dee-vee-ey-shuhn]
noun
1.
the act of deviating.
2.
departure from a standard or norm.
3.
Statistics. the difference between one of a set of values and some fixed value, usually the mean of the set.
4.
Navigation. the error of a magnetic compass, as that of a ship, on a given heading as a result of local magnetism. Compare variation ( def 8 ).
5.
Optics.
a.
Also called the bending of rays of light away from a straight line.
6.
departure or divergence from an established dogma or ideology, especially a Communist one.

Origin:
1375–1425; late Middle English (< Middle French) < Medieval Latin dēviātiōn- (stem of dēviātiō), equivalent to Late Latin dēviāt(us) (see deviate) + -iōn- -ion

deviatory [dee-vee-uh-tawr-ee, -tohr-ee] , deviative, adjective
nondeviation, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
 deviation (ˌdiːvɪˈeɪʃən) —n 1. an act or result of deviating 2. statistics the difference between an observed value in a series of such values and their arithmetic mean 3. the error of a compass due to local magnetic disturbances

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Etymonline
Word Origin & History

deviation
1640s, noun of action from L. deviare (see deviant). Statistical sense is from 1858.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

deviation de·vi·a·tion (dē'vē-ā'shən)
n.

1. A turning away or aside from a normal course.

2. An abnormality.

3. Deviant behavior or attitudes.

4. The difference, especially the absolute difference, between one number in a set and the mean of the set.

The American Heritage® Stedman's Medical Dictionary