filtration

noun

fil·​tra·​tion fil-ˈtrā-shən 

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

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

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

Rhymes for filtration

• ablation
• bination
• carnation
• cassation
• castration
• causation
• centration
• cessation
• cetacean
• chelation
• citation
• collation

Kids Definition

filtration

noun

fil·​tra·​tion fil-ˈtrā-shən 

: the act or process of filtering

Medical Definition

filtration

noun

fil·​tra·​tion fil-ˈtrā-shən 

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