[dee-vee-ey-shuh n]
/ˌdi viˈeɪ ʃən/

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.

- Also called deflection. the bending of rays of light away from a straight line.
- angle of deviation.

6.

departure or divergence from an established dogma or ideology, especially a Communist one.

Origin of deviation

Related forms

deviatory [dee-vee-uh-tawr-ee, -tohr-ee] /ˈdi vi əˌtɔr i, -ˌtoʊr i/ (Show IPA), deviative, adjective

nondeviation, noun

British Dictionary definitions for deviative

/ˌdiːvɪˈeɪʃən/

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

Word Origin and History for deviative

n.

1640s, noun of action from deviate (v.). Statistical sense is from 1858. Related: Deviational.

deviative in Medicine

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

A turning away or aside from a normal course.

An abnormality.

Deviant behavior or attitudes.

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

deviative in Science

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