Fibonacci numbers

[ fee-boh-nah-chee ]
/ ˌfi boʊˈnɑ tʃi /

plural noun Mathematics.

the unending sequence 1, 1, 2, 3, 5, 8, 13, 21, 34, … where each term is defined as the sum of its two predecessors.

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. 2019