Definition of variability noun from the Oxford Advanced Learner's Dictionary

  

variability

 noun
noun
BrE BrE//ˌveəriəˈbɪləti//
 
; NAmE NAmE//ˌveriəˈbɪləti//
 
, NAmE//ˌværiəˈbɪləti//
 
[uncountable]
 
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the fact of something being likely to vary climatic variability a degree of variability in the exchange rateExtra examples There is considerable variability in all the test scores. variability among different health authorities variability in crop yields The changes were attributed to natural climatic variability. There is always a degree of variability in the exchange rate.
See the Oxford Advanced American Dictionary entry: variability