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 work included repairs to the Gibson Ranch Lift Station and paving, lighting, piping and other infrastructure improvements associated with the treatment plant’s grit filtration system. — Daniel Lempres, Sacbee.com, 19 Aug. 2026

For homebuyers, assessing HVAC filtration and inquiring about past smoke exposure and remediation are vital. — Jamie Gold, Forbes.com, 18 Aug. 2026

While healthcare packaging and water filtration are exciting areas, DuPont doesn't seem to have enough heft to stay independent. — Kevin Stankiewicz,morgan Chittum, CNBC, 13 Aug. 2026

Despite this multi-layered surveillance system, Tuesday’s massive influx overwhelmed the filtration hardware, forcing operators to bring the reactors offline once again to safeguard the facilities. — Aman Tripathi, Interesting Engineering, 12 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