Phrase guide

Fibonacci sequence

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

The sequence of integers, each of which is the sum of the preceding two, the first and second numbers both being 1.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any sequence of numbers such that each is the sum of the preceding two.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

Examples

  • 2007, Anthony Nicolaides, Make The Grade At GCSE Mathematics, Higher Tier, P.A.S.S. Publications, 3rd Edition, page 169, 19. The first two terms of a Fibonacci sequence are a and b. Write out a few terms.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a sequence of numbers in which each number equals the sum of the two preceding numbers

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: sequence

History

Etymology

Named after the Italian mathematician later known as Fibonacci (c.1175 – c.1250), who introduced the sequence to a European readership in his 1202 book Liber Abaci.

Across languages

Translations

14 source translations are retained for this English entry.

  • Bulgarian: числа́ на Фибона́чи (čislá na Fibonáči) — sequence of numbers
  • Chinese Mandarin: 斐波那契數列 /斐波那契数列 (Fěibōnàqì shùliè) — sequence of numbers
  • Czech: Fibonacciho posloupnost — sequence of numbers
  • Estonian: Fibonacci rida — sequence of numbers
  • Finnish: Fibonaccin lukujono — sequence of numbers
  • French: suite de Fibonacci — sequence of numbers
  • German: Fibonaccifolge — sequence of numbers
  • Hungarian: Fibonacci-sorozat — sequence of numbers
  • Italian: successione di Fibonacci — sequence of numbers
  • Japanese: フィボナッチ数列 (Fibonatchi-sūretsu) — sequence of numbers
  • Portuguese: sucessão de Fibonacci — sequence of numbers
  • Portuguese: sequência de Fibonacci — sequence of numbers
  • Russian: после́довательность Фибона́ччи (poslédovatelʹnostʹ Fibonáčči) — sequence of numbers
  • Turkish: Fibonacci dizisi — sequence of numbers