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

Housing reforms to guarantee adequate air filtration and appropriate isolation facilities. —Powel H. Kazanjian, The Conversation, 5 Mar. 2025

Pet owners will appreciate the HEPA filtration system, which traps allergens while picking up fur. —Juhi Wadia, PCMAG, 25 Feb. 2025

Its two-stage HEPA filtration system only needs to be replaced every six months, and the vacuum recharges in just over three hours. —Kelsey Fredricks, People.com, 24 Feb. 2025

For much of the war, Russian forces have continued to use filtration in occupied towns and regions and along the Russian border. —Nataliya Gumenyuk, Foreign Affairs, 12 Feb. 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