Word.ws English Dictionary

duocentillion

duocentillion numeral: 10³⁰⁹.

Numeral

duocentillion (plural duocentillions)

  1. (rare, short scale) 10³⁰⁹.
    • Names of the Periods.—1st, Units. 2d, Thousands. 3d, Millions. 4th, Billions. 5th, Trillions. 6th, Quadrillions. 7th, Quintillions. 8th, Sextillions. 9th, Septillions. 10th. Octillions. 11th, Nonillions. 12th, Decillions. 13th, Undecillions. 14th, Duodecillions. 15th, Tridecillions. 16th...[1859, Alfred Holbrook, “Theoretical Arithmetic”, in The Normal: or, Methods of Teaching the Common Branches, […], New York, N.Y.: […] A[lfred] S[mith] Barnes & Burr, […], →OCLC, page 306
    • "Upon." This upon. Upon a time. How upon? A time, especially a time? How can anyone be upon a time? Why not within? Without? Inside? Out? Under, over, in front of, back of, beside, above, beyond? "Twice beneath a time." "Thrice beyond a time." "One hundred thousand three hundred and forty-six...2004, Brian Campbell, “Conte”, in Lenore Langs, Laurie Smith, editors, Continuum: Time, the Fourth Dimension, Windsor, Ont.: Cranberry Tree Press, →ISBN; republished as Brian Campbell, “Conte”, in...

Examples of duocentillion in a sentence

  • "Twice beneath a time." "Thrice beyond a time." "One hundred thousand three hundred and forty-six nonagintillion duocentillion sextendecillion times without…" …a time?2004, Brian Campbell, “Conte”, in Lenore Langs, Laurie Smith, editors, Continuum: Time, the Fourth Dimension, Windsor, Ont.: Cranberry Tree...
  • Bert points out that there are 6⁴ = 1296 different combinations of face values of four dice, and Ernie cannot possibly write down all sequences of 100 rolls, as 1296¹⁰⁰ is more than 100 duocentillion.2025, Andreas Klappenecker, Hyunyoung Lee, “Pigeonhole Principle”, in Discrete Structures (Undergraduate Texts in Mathematics), Cham...

Forms of duocentillion

pluralduocentillions

Origin of duocentillion

From duo- (“two”) + centillion. Compare Latin ducentī (“two hundred”). Coined by Alfred Holbrook Alfred Holbrook, a principal of South-Western Normal School in Lebanon, Ohio, in 1859 (see the quotation).

Questions about duocentillion

What does duocentillion mean?
Duocentillion means 10³⁰⁹.
How do you use duocentillion in a sentence?
"Twice beneath a time." "Thrice beyond a time." "One hundred thousand three hundred and forty-six nonagintillion duocentillion sextendecillion times without…" …a time?
What part of speech is duocentillion?
Duocentillion is a numeral.

Words near duocentillion in the dictionary

  1. Duo-Tangs
  2. duobinary
  3. duocarmycin
  4. duocarmycins
  5. duocase
  6. duocentillion
  7. duocentillions
  8. duochrome
  9. duochromes
  10. duocolor
  11. duocrinin

Source and license

Adapted from Wiktionary: duocentillion (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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