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

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

Both communities have become reliant on bottled water as a source of safe drinking water, in addition to filtration systems inside the homes. —Madeline Heim, jsonline.com, 2 Oct. 2025

These include an oxygen filtration system, night vision goggles, and an LED strobe light and intercom system that the driver and their passenger can control. —Bryan Hood, Robb Report, 30 Sep. 2025

Thanks to the micro-filtration system and air pressure, the coffee is less bitter than other methods. —Christopher Murray 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, 29 Sep. 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