qua·​dril·​lion | \ kwä-ˈdril-yən How to pronounce quadrillion (audio) \

Definition of quadrillion

US : a number equal to 1 followed by 15 zeros — see Table of Numbers also, British : a number equal to 1 followed by 24 zeros — see Table of Numbers

Other Words from quadrillion

quadrillion adjective
quadrillionth \ kwä-​ˈdril-​yən(t)th How to pronounce quadrillion (audio) \ adjective or noun

Examples of quadrillion in a Sentence

Recent Examples on the Web Today the world’s most powerful supercomputer, the Fugaku—built by Fujitsu in Japan—achieves 442 petaflops per second (or 442 quadrillion floating point calculations per second) on this benchmark. Jeremy Kahn, Fortune, 30 Mar. 2022 Scientists are computing future climate change at 5.34 quadrillion calculations on the Cheyenne supercomputer at National Center for Atmospheric Research. Robert Lee Hotz, WSJ, 6 Feb. 2022 But what about numbers above 27? Consider this: for eight queens, there are just 92 solutions, but for 27 queens, there are over 200 quadrillion solutions. Caroline Delbert, Popular Mechanics, 14 Feb. 2022 There is no ultimate limit of the number of Dogecoins minted, and the cap for Shibu Inus is set at one quadrillion coins. Spencer Jakab, WSJ, 29 Oct. 2021 There is essentially an unlimited supply: one quadrillion Shiba Inu coins (that’s 15 zeros). Scott Nover, Quartz, 28 Oct. 2021 One petaFLOP is equivalent to 1,000,000,000,000,000 - or one quadrillion - mathematical operations. Gabriel A. Silva, Forbes, 3 Sep. 2021 The state complexity scales exponentially, so what takes 50 qubits requires 250, or about one quadrillion, bits to describe. Daniel Garisto, Scientific American, 15 July 2021 TrueAllele concluded that the DNA on the clerk’s shirt was 180 quadrillion times more likely to come from Watson than another African American, according to court documents. Washington Post, 13 July 2021 See More

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

First Known Use of quadrillion

circa 1690, in the meaning defined above

History and Etymology for quadrillion

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

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Time Traveler for quadrillion

Time Traveler

The first known use of quadrillion was circa 1690

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Dictionary Entries Near quadrillion

quadrille paper



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Statistics for quadrillion

Last Updated

15 Apr 2022

Cite this Entry

“Quadrillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadrillion. Accessed 27 May. 2022.

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