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variation

noun [C or U] (CHANGE)
 
 
/ˌveə.riˈeɪ.ʃən/ US  /ˌver.i-/

Definition

B2 a change in amount or level: Unemployment rates among white-collar workers show much less regional variation than corresponding rates among blue-collar workers. The medical tests showed some variation in the baby's heart rate. global temperature variations over the last 140 yearsChange and changes
(Definition of variation noun (CHANGE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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