deviation

1 of 3

noun (1)

Synonyms of deviationnext
: an act or instance of deviating: such as
a
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 orthodoxy
d
: noticeable or marked departure from accepted norms (see norm sense 2) of behavior

deviationist

2 of 3

noun (2)

plural -s
: one who departs from the principles of an organization (such as a political party) with which he or she is affiliated
deviationists in Communist countries

deviationist

3 of 3

adjective

: of or relating to deviationism or deviationists

Examples of deviation in a Sentence

Noun (1) 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.
Recent Examples on the Web
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Noun
Thus, traces of this quantum gravity theory or a fifth fundamental force appearing as deviations from Newton's laws should be testable with a wide range of experiments. Robert Lea, Space.com, 15 June 2026 When the complex was being constructed, there were deviations from the building’s original design, contributing to structural weaknesses, the report said. Aaron Leibowitz, Miami Herald, 23 June 2026 The Ohio Valley, mid-Atlantic and Northeast are likely to see the biggest deviations from seasonal averages. Andrea Thompson, Scientific American, 29 June 2026 At the same time, the city began to pressure Cal Coast to re-zone the golf course for another 500 homes, a deviation from the original development, Miller said. Chase Hunter, Mercury News, 23 June 2026 See All Example Sentences for deviation

Word History

Etymology

Noun (1)

see deviate entry 1

First Known Use

Noun (1)

15th century, in the meaning defined above

Time Traveler
The first known use of deviation was in the 15th century

Browse Nearby Words

Cite this Entry

“Deviation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/deviation. Accessed 7 Jul. 2026.

Kids Definition

deviation

noun
: an act or instance of deviating: as
a
: the difference found by subtracting some fixed number (as the arithmetic mean of a series of statistical data) from any item of the series
b
: noticeable difference from accepted standards (as of behavior or morals)

Medical Definition

deviation

noun
: an act or instance of diverging from an established way or in a new direction: as
a
: evolutionary differentiation involving interpolation of new stages in the ancestral pattern of morphogenesis
b
: noticeable or marked departure from accepted norms of behavior

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