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 core expression was bottled at 100 proof without chill filtration, and includes whiskeys aged between two and 10 years. —Jonah Flicker, Robb Report, 15 June 2026

The pool, which was first installed in 1923, was previously renovated in 2012 to reengineer its circulation and filtration system, though the shallow water feature has been notoriously difficult to keep clean. —Meredith Kile, PEOPLE, 15 June 2026

The proprietary filtration system is specifically engineered to remove impurities, chlorine, harmful chemicals and heavy metals from your water. —ABC News, 13 June 2026

The district closed the indoor swimming facility at 1000 Bear Creek Parkway on May 12 due to safety concerns after the filtration system failed. —Fousia Abdullahi, Fort Worth Star-Telegram, 13 June 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
• aeration
• bination
• carnation
• cassation
• castration
• causation
• centration
• cessation
• cetacean
• chelation
• citation

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