Fibonacci sequence

/ ˌfɪbəˈnɑːtʃɪ /

noun

1. the infinite sequence of numbers, 0, 1, 1, 2, 3, 5, 8, etc, in which each member ( Fibonacci number ) is the sum of the previous two

Fibonacci sequence

1. A sequence of numbers, such as 1, 1, 2, 3, 5, 8, 13 … , in which each successive number is equal to the sum of the two preceding numbers. Many shapes occurring in nature, such as certain spirals, have proportions that can be described in terms of the Fibonacci sequence.
2. See also golden section

Word History and Origins

Origin of Fibonacci sequence¹

named after Leonardo Fibonacci