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

To get in on the trend without investing in a new appliance, simpler improvements like under-sink water filtration systems and water-leak detectors offer peace of mind and improve quality of life, too. —Kristina McGuirk, Better Homes & Gardens, 4 Jan. 2026

This data is fed into a sophisticated AI system that can adjust flow rates, treatment intensity, and filtration behaviour as needed. —Christopher McFadden, Interesting Engineering, 3 Jan. 2026

The beauty of this device is its multi-faceted approach to water filtration, which removes bacteria, dust particles, and debris from the air through its double-layered filter and combination of UV and LED lights to cleanse its tank. —Jennifer Hussein, Allure, 1 Jan. 2026

Louisville’s filtration process produces residual solids that have to be removed from the treatment plant. —Caroline Neal, Louisville Courier Journal, 30 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