fil·​tra·​tion | \ fil-ˈtrā-shən \

Definition of filtration 

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

The family-size T-fal 7211002145 FR8000 Deep Fryer has a 3.5-liter oil capacity, an immersed heating element that quickly recovers oil temperature, and an automatic oil-filtration system. Francine Maroukian, Popular Mechanics, "The Best Deep Fryers—and How to Fry Anything," 14 Nov. 2018 In several deals costing at least $3 billion, GE acquired water-filtration businesses that used different, competing technologies, and then put the groups together under a single sales force. Russell Adams, WSJ, "Can Larry Culp Fix GE?," 6 Oct. 2018 The vac uses a high filtration bag and HEPA AirClean filter that the company claims will retain 99.99% of dust from being released back into the air — a plus for allergy sufferers. Sarah Bogdan, Good Housekeeping, "These Top 5 Canister Vacuums Are Pros at Cleaning Tough-to-Reach Places," 14 Dec. 2018 DrinkPod LLC will manufacture the water filtration appliances and Gibson Overseas Inc. will make the housewares items, Sears said. Kimberly Chin, WSJ, "Sears Expands Kenmore, DieHard Brands With Licensing Deals," 1 Nov. 2018 The sand filters, similar to what may be found in swimming pools, act as the initial filter as well as help to provide biological filtration for the pool. The Kansas City Zoo, kansascity, "New Stingray Bay Touch Tank Exhibit Now Open at KC Zoo (Sponsored)," 27 June 2018 The project will include a series of step-pools to slow the stormwater runoff and provide filtration for water quality improvements before the water empties into the Susquehanna. Erika Butler, The Aegis, "Trash containers in Havre de Grace can accommodate up to 50 pounds," 19 Apr. 2018 Keep doors and windows closed when your allergens are plentiful, and use filtration systems, too. Colleen Stinchcombe, SELF, "13 Ways to Triumph Over Fall Allergies," 13 Nov. 2018 His filtration systems are for sale and have been shipping all over the world. Jack Fisher, The Seattle Times, "Group screens and cleans sand near Oregon’s Haystack Rock," 20 Aug. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'filtration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of filtration

1602, in the meaning defined at sense 1

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Last Updated

9 Jan 2019

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Time Traveler for filtration

The first known use of filtration was in 1602

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English Language Learners Definition of filtration

: the act or process of removing something unwanted from a liquid, gas, etc., by using a filter


fil·​tra·​tion | \ fil-ˈtrā-shən \

Kids Definition of filtration

: the process of filtering


fil·​tra·​tion | \ fil-ˈtrā-shən \

Medical Definition of filtration 

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

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More from Merriam-Webster on filtration

Rhyming Dictionary: Words that rhyme with filtration

Spanish Central: Translation of filtration

Nglish: Translation of filtration for Spanish Speakers

Britannica English: Translation of filtration for Arabic Speakers

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a person who helps groups work together

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