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.
Looking forward, there’s growing excitement around innovations like microfiber-catching filters for washing machines as well as for home water and air filtration systems. Alexandra Harrell, Sourcing Journal, 16 Oct. 2025 Each of the three whiskies, aged for 24, 34, and 43 years, was finished in these casks and bottled without chill filtration and no color added. Jonah Flicker, Robb Report, 16 Oct. 2025 The pipeline crews are working to replace helps remove waste left over from the water filtration process at the Crescent Hill plant. Leo Bertucci, Louisville Courier Journal, 14 Oct. 2025 Its brushless motor delivers strong suction, while the filtration technology picks up unwanted dust and debris. Nora Colomer May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 13 Oct. 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

Browse Nearby Words

Cite this Entry

“Filtration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/filtration. Accessed 21 Oct. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!