noun, often attributive
quin·​de·​cil·​lion | \ ˌkwin-di-ˈsil-yən How to pronounce quindecillion (audio) \

Definition of quindecillion

US : a number equal to 1 followed by 48 zeros — see Table of Numbers also, British : a number equal to 1 followed by 90 zeros — see Table of Numbers

Examples of quindecillion in a Sentence

Recent Examples on the Web Or even worse, part of a plot to make $5 quindecillion. Peter Dunn, Indianapolis Star, "Pete the Planner: You saved for a big expense. Don't let greed or overthinking derail you.," 3 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quindecillion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of quindecillion

1848, in the meaning defined above

History and Etymology for quindecillion

Latin quindecim fifteen (from quinque five + decem ten) + English -illion (as in million) — more at ten

Keep scrolling for more

Learn More about quindecillion

Time Traveler for quindecillion

Time Traveler

The first known use of quindecillion was in 1848

See more words from the same year

Statistics for quindecillion

Cite this Entry

“Quindecillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quindecillion. Accessed 1 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on quindecillion

What made you want to look up quindecillion? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
Spell It

Can you spell these 10 commonly misspelled words?


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!