Word.ws English Dictionary

quintillions

quintillions is the plural of quintillion.

Meaning of quintillion

Numeral

quintillion (plural quintillions)

  1. (Australian, British, US, modern, short scale) A billion billion: 1 followed by eighteen zeros, 10¹⁸; one million million million.
    • Last week, we used[…]the BBC News website's biggest number: 9,223,372,036,854,775,808, that's 9.2 quintillion[…][the maximum video viewer count on YouTube's] updated counter software.2014, “Small Data: Those big numbers keep on coming”, in BBC News Magazine Monitor, BBC
    Synonyms:
    trillion[long scale]]>
  2. (Australia, UK, dated, long scale) A million quadrillion: 1 followed by 30 zeros, 10³⁰.
    Synonyms:
    nonillion
  3. (colloquial, excessive) An unspecified very large number.
    • Near-synonyms: gazillion; see also Thesaurus:zillion
    Synonyms:
    gazillion

See all 4 meanings of quintillion

Questions about quintillions

What is quintillions the plural of?
Quintillions is the plural of quintillion.

Words near quintillions in the dictionary

  1. quintilliards
  2. quintillion
  3. quintillionaire
  4. quintillionaires
  5. quintillionfold
  6. quintillions
  7. quintillionth
  8. quintillionths
  9. quintin
  10. quintina
  11. quintine

Source and license

Adapted from Wiktionary: quintillions (page history and authors); quintillion (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “quintillions.” Word.ws, https://word.ws/quintillions. Based on Wiktionary, CC BY-SA 4.0.