octodecillion

O1C3T1O1D2E1C3I1L1L1I1O1N1
/ˌɒktoʊdəˈsɪl.i.ən/

numeral

10⁵⁷.

Scrabble 18

Meanings

numeraloctodecillion (plural octodecillions)

plural octodecillions

  1. AustralianBritishUSmodernrareshort scale10⁵⁷.

    No need to sit and worry about it, though. Although it could occur tomorrow, the odds are that the universe has a lifetime of somewhere between 10 octodecillion years (one with 58 zeros after it) and 10 quinquadragintillion years (one with 139 zeros after it).

    2018 May 1, Wayne Harris-Wyrick, “What will universe’s final moment look like?”, in The Oklahoman, volume 127, number 121, Oklahoma City, Okla.: Oklahoma Publishing Co., →OCLC, page 3D, column 3
    3 more examples

    1962, David Bergamini, The Universe, Time-Life Books, Google Books considers page number to be top-secret The reason is that the rays created in the core are softened on their outward journey by being handled by the octodecillion-odd atoms of gas outside the core that are part of the sun but play no part in the central fusions.

    How many Stars Shine on Tiny Jennifer’s Hair? ... Two million, three hundred and forty nine thousand, eight hundred seventy five vigintillion, seven hundred fifty four novemdecillion, five hundred forty three octodecillion, four hundred fifty seven septendecillion...

    2004, Alan Sondheim, The Wayward, →ISBN, page 138

    2004, Jay Carty, Darrell Waltrip (co-author), Darrell Waltrip One-On-One, The Faith That Took Him to the Finish Line, Gospel Light Publishing, →ISBN, “Day 23”, unpaged the odds on the development of a polypeptide, which is a protein building block, is 6 times 10 to the 57th power, or 600 octodecillion, to 1.

  2. AustralianBritishdatedrarelong scale10¹⁰⁸.

Origin

From Latin octodec(im) (“eighteen”) + -illion; compare tredecillion, quattuordecillion, etc. By surface analysis, octo- + decillion.

Full word history & related roots →

Translations

Dutch octodeciljoen
  • octodeciljoen10108
Esperanto naŭiliardo
  • naŭiliardo1057
Finnish tuhat noniljoonaa, duodevigintiljoona
  • tuhat noniljoonaa1057
  • duodevigintiljoona10108
French nonilliard, octodécillion
  • nonilliard1057
  • octodécillion10108
German Nonilliarde, Oktodezillion
  • Nonilliarde1057
  • Oktodezillion10108
Hungarian nonilliárd
  • nonilliárd1057
Japanese 十阿僧祇
  • 十阿僧祇 (jūasōgi)1057
Malay oktodesilion
  • oktodesilion1057
Polish noniliard
  • noniliard1057
Russian октодециллион, квинтригинтиллион
  • октодециллион (oktodecillion)1057
  • квинтригинтиллион (kvintrigintillion)10108
Spanish octodecillón
  • octodecillón10108

Rhymes & wordplay

Rhymes with octodecillion

All rhymes →
Cite this entry
APA

octodecillion. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/octodecillion

MLA

“octodecillion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/octodecillion. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “octodecillion,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/octodecillion.

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