filtration

noun

fil·​tra·​tion fil-ˈtrā-shən How to pronounce filtration (audio)
1
: the process of filtering
2
: the process of passing through or as if through a filter
also : diffusion

Examples of filtration in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
No fining or filtration is used to make wines and grapes are exposed to indigenous rather than commercial yeasts. Tom Mullen, Forbes.com, 11 May 2025 It’s also outfitted with a multilayer filtration system that can capture up to 99.99 percent of pollutants and allergens, according to the brand. Clara McMahon, People.com, 27 Apr. 2025 Thousands of Ukrainian citizens have been illegally detained and sent to Russia, and CNN has documented cases of people who were picked up at Russian filtration points and subsequently sent to facilities thousands of miles away from Ukraine. Ivana Kottasová, CNN Money, 13 Apr. 2025 This vac’s five-step filtration system is also pretty unique: The system filters dust by separating suctioned dust in the bin, then filtering the remaining finer dust through. Stephanie Osmanski, Better Homes & Gardens, 10 Apr. 2025 See All Example Sentences for filtration

Word History

Etymology

borrowed from Middle French & Medieval Latin; Middle French, borrowed from Medieval Latin filtrātiōn-, filtrātiō, from filtrāre "to pass through a filter" + Latin -tiōn-, -tiō, suffix of verbal action — more at filtrate

First Known Use

1602, in the meaning defined at sense 1

Time Traveler
The first known use of filtration was in 1602

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Cite this Entry

“Filtration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/filtration. Accessed 1 Jun. 2025.

Kids Definition

filtration

noun
fil·​tra·​tion fil-ˈtrā-shən How to pronounce filtration (audio)
: the act or process of filtering

Medical Definition

filtration

noun
fil·​tra·​tion fil-ˈtrā-shən How to pronounce filtration (audio)
1
: the process of filtering
2
: the process of passing through or as if through a filter
also : diffusion
the kidney produces urine by filtration

More from Merriam-Webster on filtration

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