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 administration's spring renovation, however, was limited to repainting the bottom of the pool and installing a new filtration system, leaving the pipes untouched. — Elise Spenner, ABC News, 7 Aug. 2026

Ask your lodging about air conditioning, filtration and backup power. — Christopher Elliott, Forbes.com, 7 Aug. 2026

Joseph Padron, who helped design and build the facility, said the plant utilizes sophisticated nano-filtration technology that sets it apart from previous systems. — Joan Murray, CBS News, 6 Aug. 2026

Completely chemical-free, a natural swimming pool uses plants and a filtration system to maintain itself. — Savanna Bous, Better Homes & Gardens, 6 Aug. 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