septillion

noun

sep·​til·​lion sep-ˈtil-yən How to pronounce septillion (audio)
often attributive
US : a number equal to 1 followed by 24 zeros see Table of Numbers
also, British : a number equal to 1 followed by 42 zeros see Table of Numbers

Examples of septillion in a Sentence

Recent Examples on the Web Rudy Torres: The word of the day was septillion. CBS News, 12 Feb. 2022 Authorities say the match Parabon Labs identified had a 1 in 65 septillion odds of being inaccurate. Grace Kahng, ABC News, 16 Sep. 2021 By comparison, the pressure inside a neutron star is in the septillions of gigapascals, so these liquid cases likely occur in nature around the universe. Caroline Delbert, Popular Mechanics, 9 Dec. 2019 The number of possible routes adds up to around 15 septillion (trillion trillion), according to Goldman Sachs, an investment bank. The Economist, 28 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'septillion.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

French, from Latin septem + French -illion (as in million) — more at seven

First Known Use

1690, in the meaning defined above

Time Traveler
The first known use of septillion was in 1690

Dictionary Entries Near septillion

Cite this Entry

“Septillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/septillion. Accessed 21 Jun. 2024.

Kids Definition

septillion

noun
sep·​til·​lion sep-ˈtil-yən How to pronounce septillion (audio)
US : a number equal to 1 followed by 24 zeros see number
also, British : a number equal to 1 followed by 42 zeros see number
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