quintillion

noun

quin·​til·​lion kwin-ˈtil-yən How to pronounce quintillion (audio)
US : a number equal to 1 followed by 18 zeros see Table of Numbers
also, British : a number equal to 1 followed by 30 zeros see Table of Numbers
quintillion adjective
quintillionth adjective or noun

Examples of quintillion in a Sentence

Recent Examples on the Web One over-the-counter container of Narcan contains molecules in the quintillions, a number requiring eighteen zeros, and each sailed into the nasal cavity like stones hurled at the night sky. Blake Nelson, The Mercury News, 13 Oct. 2024 At room temperature, the crystal can remain stable for 300 quintillion years, according to Guinness World Records—more than 21 billion times the current age of the universe. Margherita Bassi, Smithsonian Magazine, 20 Sep. 2024 The 360 terabyte data crystal will remain stable at room temperature for 300 quintillion years—a lifespan that only drops down to 13.8 billion years (i.e., the universe’s current age) if heated to 374 degrees Fahrenheit. Andrew Paul, Popular Science, 19 Sep. 2024 According to the filmmakers, there are 52 quintillion possible iterations. The Week Uk, theweek, 19 July 2024 See all Example Sentences for quintillion 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'quintillion.' 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

Latin quintus + English -illion (as in million)

First Known Use

circa 1690, in the meaning defined above

Time Traveler
The first known use of quintillion was circa 1690

Dictionary Entries Near quintillion

Cite this Entry

“Quintillion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quintillion. Accessed 5 Nov. 2024.

Kids Definition

quintillion

noun
quin·​til·​lion kwin-ˈtil-yən How to pronounce quintillion (audio)
US : a number equal to 1 followed by 18 zeros see number
also, British : a number equal to 1 followed by 30 zeros see number

More from Merriam-Webster on quintillion

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