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

Places like these whose measurements continue to average over the PFAS limits will need to locate other sources of drinking water for their customers or install filtration systems within the next few years. —Austin Fast, USA Today, 5 Dec. 2025

Post-renovation, every room and suite is equipped with a wet bar with a water filtration system so guests can refill their water bottles (provided by the hotel). —Dobrina Zhekova, Travel + Leisure, 5 Dec. 2025

Advertisement The results of the study highlight the importance of developing better ways to monitor the air for disease-causing pathogens, including viruses, using filtration and sensing systems that could provide more real-time readings. —Alice Park, Time, 4 Dec. 2025

Made specifically for animal hair and other pet messes, this Dyson is easy to move around, has a brush made to detangle hair, and whole-machine filtration. —Nashia Baker, Architectural Digest, 1 Dec. 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