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.
The abode is at the bleeding edge of residential design, too, with a customizable smart-home system, hospital-grade air filtration, advanced security, and a water recycling system. Rachel Cormack, Robb Report, 8 Oct. 2025 Its thorough filtration process captures pollen, dust, and other small particles, while also absorbing odors and fumes. Isabel Garcia, PEOPLE, 8 Oct. 2025 Make good on your resolution to drink more water with this sleek water filtration system that’s 20% off with an available coupon. Audrey Lee, Architectural Digest, 8 Oct. 2025 Proposition 494 would pay for a new fire station in the Superstition Vistas area, new fire equipment and facility repairs and improvements for air filtration and cancer mitigation. Maritza Dominguez, AZCentral.com, 4 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 17 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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