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

The whiskey is bottled without chill filtration and at cask strength of 103.4 proof to preserve as much flavor as possible. —Jonah Flicker, Robb Report, 15 June 2025

Beyond testing their water, farmers are increasingly considering chemical treatments that can kill pathogens, as well as UV light and filtration systems, said McEntire, the industry consultant. —Suzy Khimm, NBC news, 7 June 2025

This nano aquarium has a 3-stage filtration system that provides optimal water clarity. —Bestreviews, Mercury News, 6 June 2025

The roof also is designed to channel rainwater into a tank where it can be purified with a custom filtration system to be safe for use in kitchens, bathrooms, showers, washing machines, and dishwashers. —Jennifer Castenson, Forbes.com, 29 May 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