Word.ws English Dictionary

octillions

octillions is the plural of octillion.

Meaning of octillion

Numeral

octillion (plural octillions)

  1. (Australia, UK, US, modern, short scale) A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 10²⁷.
    • Altogether it takes seven billion billion billion (that’s 7,000,000,000,000,000,000,000,000,000, or seven octillion) atoms to make you.2019, Bill Bryson, The Body: A Guide for Occupants, Black Swan (2020), pages 5–6
  2. (Australia, UK, dated, long scale) A trillion quintillion: 1 followed by 48 zeros, 10⁴⁸.

Questions about octillions

What is octillions the plural of?
Octillions is the plural of octillion.

Words near octillions in the dictionary

  1. octilinear
  2. octillion
  3. octillionaire
  4. octillionaires
  5. octillionfold
  6. octillions
  7. octillionth
  8. octillionths
  9. octinoxate
  10. octinucleate
  11. octisalate

Source and license

Adapted from Wiktionary: octillions (page history and authors); octillion (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: “octillions.” Word.ws, https://word.ws/octillions. Based on Wiktionary, CC BY-SA 4.0.