Tribonacci

T1R1I1B3O1N1A1C3C3I1

proper noun

A variant of the Fibonacci sequence in which the preceding three terms, rather than the preceding two, are summed at each iteration.

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Meanings

proper noun
  1. mathematicsA variant of the Fibonacci sequence in which the preceding three terms, rather than the preceding two, are summed at each iteration.

    Elite uses a pseudorandom number generator based on Tribonacci numbers. Unlike Fibonacci numbers, where the nth term in the series is based on the previous two terms, Tribonacci numbers use the previous three terms: […]

    2016, John Aycock, Retrogame Archeology, Springer, →ISBN, page 113

Origin

Blend of tri- + Fibonacci.

Full word history & related roots →

Rhymes & wordplay

Anagrams

carbonitic
Cite this entry
APA

Tribonacci. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Tribonacci

MLA

“Tribonacci.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Tribonacci. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “Tribonacci,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Tribonacci.

Source: Tribonacci on Wiktionary, CC BY-SA 4.0.