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

Release of dung increases soil organic carbon and helps build soil structure that improves water filtration and soil aeration. —Paige Stein, Hartford Courant, 4 May 2026

Plus, the three-stage filtration system captures common airborne particles, while its 360-degree air intake efficiently pulls in and circulates air in rooms of up to 1,800 square feet. —Toni Sutton, PEOPLE, 30 Apr. 2026

Pros & Cons The Dyson Purifier Humidify+Cool PH2 De-NOx is a multifunction smart air purifier that uses HEPA and carbon filtration to remove harmful airborne pollutants and employs ultraviolet cleansing technology to deliver cool, clean, moist air. —John R. Delaney, PC Magazine, 28 Apr. 2026

The liquid is then pushed through multiple filtration beds that remove the remaining organic and inorganic impurities. —Georgina Jedikovska, Interesting Engineering, 27 Apr. 2026

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