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.
When completed, Smiths will be down to two businesses — John Crane, a supplier of mechanical seals and filtration products, and Flex-Tek, which supplies components that heat and move fluids and gases. Ian King, CNBC, 22 Oct. 2025 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 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 29 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

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