Pell number

noun

An infinite sequence of integers that comprises the denominators of the closest rational approximations to the square root of 2.

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Meanings

nounPell number (plural Pell numbers)

plural Pell numbers

  1. mathematicsAn infinite sequence of integers that comprises the denominators of the closest rational approximations to the square root of 2.
Cite this entry
APA

Pell number. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Pell%20number

MLA

“Pell number.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Pell%20number. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Pell number,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Pell%20number.

Source: Pell number on Wiktionary, CC BY-SA 4.0.