# Fibonacci sequence

## Fibonacci numbers

[fee-boh-nah-chee]
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.
Also called Fibonacci sequence.

Origin:
1890–95; after Leonardo Fibonacci, 13th-century Italian mathematician

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World English Dictionary
 Fibonacci sequence or Fibonacci series (ˌfɪbəˈnɑːtʃɪ) —n 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 [named after Leonardo Fibonacci] Fibonacci series or Fibonacci series —n [named after Leonardo Fibonacci]

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Science Dictionary
 Fibonacci sequence   (click for larger image in new window) 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. See also golden section.
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Computing Dictionary

### Fibonacci sequence definition

mathematics
The infinite sequence of numbers beginning
1, 1, 2, 3, 5, 8, 13, ...
in which each term is the sum of the two terms preceding it.
The ratio of successive Fibonacci terms tends to the golden ratio, namely (1 + sqrt 5)/2.
[Why not "Fibonacci series"?]
(2002-10-15)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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