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

It’s also designed with a HEPA filtration and anti-allergen seal, trapping up to 99.97 percent of dust. —Amy Schulman, People.com, 28 Mar. 2025

To that end, the wort is recirculated to improve purity, thanks to the ability of the husks in the liquid to act as a sort of filtration system. —Brian Freedman, Forbes.com, 28 Mar. 2025

There are a number of methods, from the vacuum distillation that winemakers favor to osmosis filtration used in nonalc beer production. —Oset Babür-Winter, Bon Appétit, 24 Mar. 2025

Those who don't connect or cannot use water filtration systems designed to address the issue or drink water from sources other than their wells, such as bottled water. Update 3/21/25, 5:20 p.m. ET: This article was updated to include additional information. —Thomas G. Moukawsher, Newsweek, 21 Mar. 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