quintile

noun

quin·​tile ˈkwin-ˌtī(-ə)l How to pronounce quintile (audio)
: any of the four values that divide the items of a frequency distribution into five classes with each containing one fifth of the total population
also : any one of the five classes

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Breaking Down the Meaning of Quintile

Many people have a deep interest in statistics about themselves, whether the information provided is about income, ice-cream consumption, or trash production. And any such rating can be divided into fifths, or quintiles. The fifth or lowest quintile would include the 20 percent of the population who make the least money or eat the least ice cream or generate the least trash, and the first quintile would include the 20 percent who make, eat, or generate the most.

Examples of quintile in a Sentence

Recent Examples on the Web
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All the way up to the 5th quintile, none of whom rely on Social Security for 90% or more of their income in retirement. Mike Sylvester, Forbes.com, 21 May 2025 For people in the top quintile of the income spectrum, the total gains in 2026 are more than $468,000. Tobias Burns, The Hill, 16 May 2025 The researchers then divided the participants into five roughly equal parts called quintiles, according to their levels of each biomarker, and compared the risk of major cardiovascular events among those in the highest quintile against those in the lowest. Brenda Goodman, CNN, 31 Aug. 2024 The middle quintile, those making $80,000 yearly, paid 13% of their income. Ryan Ellis, Boston Herald, 12 Apr. 2025 See All Example Sentences for quintile

Word History

Etymology

Latin quintus + English -ile entry 2

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of quintile was in 1922

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Cite this Entry

“Quintile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quintile. Accessed 6 Jun. 2025.

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