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

Finally, all of the whiskey was blended together and bottled at 92 proof with no chill filtration. — Jonah Flicker, Robb Report, 2 July 2026

There is also a lizard, four hermit crabs, a toothed frog, and a wall-size fish tank that the kids built with their father; its filtration system is based on the workings of a kidney. — Melanie Thernstrom, New Yorker, 29 June 2026

Oat milk retains some of that beta-glucan, but the filtration process strains out a significant portion of heart-healthy soluble beta-glucan fiber. — Bridget Shirvell, Martha Stewart, 28 June 2026

Additional specialized filtration infrastructure required for the process can take years to gain approval. — Krysta Escobar, CNBC, 28 June 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