oc·​til·​lion | \ äk-ˈtil-yən How to pronounce octillion (audio) \

Definition of octillion

US : a number equal to 1 followed by 27 zeros — see Table of Numbers also, British : a number equal to 1 followed by 48 zeros — see Table of Numbers

Examples of octillion in a Sentence

Recent Examples on the Web The odds of the suspect not being Blankenship, according to this match, is 1 in 3 octillion. Kevin Grasha, Cincinnati.com, "'He's a pig.' Deters says 20-year-old serial rape case solved using genealogy site," 11 Feb. 2020 To put that in perspective, an octillion is a one with 27 zeros after it. Jared Gilmour, miamiherald, "Teacher was raped and murdered in 1992. Gum left at a school just caught the killer, Pa. cops say," 27 June 2018 The researchers used this tiny deflection to calculate that the mass of Stein 2051B is about 68 percent the mass of our sun — or 1.4 octillion tons (that's 14 followed by 26 zeros). Sarah Kaplan, Washington Post, "Astronomers just achieved something Einstein said was impossible," 13 June 2017

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

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First Known Use of octillion

1690, in the meaning defined above

History and Etymology for octillion

French, from Middle French, from oct- octa- + -illion (as in million)

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Time Traveler for octillion

Time Traveler

The first known use of octillion was in 1690

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Statistics for octillion

Cite this Entry

“Octillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/octillion. Accessed 12 Aug. 2020.

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