de ‧ vi ‧ a ‧ tion AC /ˌdiːviˈeɪʃ ə n/ BrE AmE noun
[ Word Family: verb : ↑ deviate ; noun : ↑ deviation ]
1 . [uncountable and countable] a noticeable difference from what is expected or acceptable
deviation from
deviation from the normal procedure
2 . [countable] technical the difference between a number or measurement in a ↑ set and the average of all the numbers or measurements in that set
⇨ ↑ standard deviation