quadrillion

noun

qua·​dril·​lion kwä-ˈdril-yən How to pronounce quadrillion (audio)
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
quadrillion adjective
quadrillionth adjective or noun

Examples of quadrillion in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
All four quadrillion connections in the human brain will be mapped. Eli Amdur, Forbes, 15 Oct. 2024 Dimming the sun is not as easy as flipping a switch, and requires the release of a quadrillion nearly invisible particles that must be tailored to just the right size. Marina Koren, The Atlantic, 12 Oct. 2024 The crystals can hold quadrillions of atoms instead of just a few, so a laser could rule out wavelengths at a rapid clip. Quanta Magazine, 4 Sep. 2024 Hard Science Einstein’s theory of general relativity passes another test, with implications for dark matter and dark energy The theory is accurate within at least one part in a quadrillion. Big Think, 24 June 2024 See all Example Sentences for quadrillion 

Word History

Etymology

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

First Known Use

circa 1690, in the meaning defined above

Time Traveler
The first known use of quadrillion was circa 1690

Dictionary Entries Near quadrillion

Cite this Entry

“Quadrillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadrillion. Accessed 7 Nov. 2024.

Kids Definition

quadrillion

noun
qua·​dril·​lion kwä-ˈdril-yən How to pronounce quadrillion (audio)
US : a number equal to 1 followed by 15 zeros see number
also, British : a number equal to 1 followed by 24 zeros see number
Last Updated: - Updated example sentences
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