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Fibonacci numbers

[fee-boh-nah-chee]
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plural noun Mathematics.
  1. the unending sequence 1, 1, 2, 3, 5, 8, 13, 21, 34, … where each term is defined as the sum of its two predecessors.
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Origin of Fibonacci numbers

1890–95; after Leonardo Fibonacci, 13th-century Italian mathematician
Also called Fibonacci sequence.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018