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Definition of Fibonacci series noun from the Oxford Advanced American Dictionary


Fibonacci series

NAmE//ˌfibəˈnɑtʃi ˌsɪriz//
, NAmE//ˌfɪbəˈnɑtʃi ˌsɪriz//
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a series of numbers in which each number is equal to the two numbers before it added together. Starting from 1, the series is 1,1,2,3,5,8,13, etc.
See the Oxford Advanced Learner's Dictionary entry: Fibonacci series