Meaning of DEVIATION in English

DEVIATION

/ ˌdiːviˈeɪʃn; NAmE / noun deviation (from sth)

1.

[ U , C ] the act of moving away from what is normal or acceptable; a difference from what is expected or acceptable :

deviation from the previously accepted norms

sexual deviation

a deviation from the plan

2.

[ C ] ( technical ) the amount by which a single measurement is different from the average :

a compass deviation of 5° (= from true north)

—see also standard deviation

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WORD ORIGIN

late Middle English : via French from medieval Latin deviatio(n-) , from Latin deviare , from de- away from + via way.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.