Standard Lemma guide

octodecillion

num · 2 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

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  • /ˌɒktoʊdəˈsɪl.i.ən/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -ɪljən

1

num

Meaning 1

1057.

Definition source: English Wiktionary via Wiktextract

Usage: Australian, British, US, modern, rare

Qualifier: short scale

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.
  • 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.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

num

Meaning 2

10108.

Definition source: English Wiktionary via Wiktextract

Usage: Australian, British, dated, rare

Qualifier: long scale

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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

Across languages

Translations

16 source translations are retained for this English entry.

  • Esperanto: naŭiliardo — 1057
  • Finnish: tuhat noniljoonaa — 1057
  • French: nonilliard — 1057
  • German: Nonilliarde — 1057
  • Hungarian: nonilliárd — 1057
  • Japanese: 十阿僧祇 (jūasōgi) — 1057
  • Malay: oktodesilion — 1057
  • Mongolian: тоолшгүй (toolšgüj) — 1057
  • Polish: noniliard — 1057
  • Russian: октодециллион (oktodecillion) — 1057
  • Dutch: octodeciljoen — 10108
  • Finnish: duodevigintiljoona — 10108
  • French: octodécillion — 10108
  • German: Oktodezillion — 10108
  • Russian: квинтригинтиллион (kvintrigintillion) — 10108
  • Spanish: octodecillón — 10108