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

Whether cleaning out cooking smells, the odor of smoke, or keeping the air clean and germ-free between guests, this air purifier ($70) will be a powerful asset thanks to 3-Stage 360 degree HEPA filtration. —Aly Walansky, Forbes, 2 Nov. 2024

It’s designed for spaces up to 800 square feet and features a multi-layer filtration system that can eliminate allergens, pet odor, hair, dander, smoke, cooking fumes, and large dust particles from the air. —Rachel Trujillo, People.com, 30 Oct. 2024

For those staying at the hotel, the rooms are equipped with temperature-regulating beds, air filtration, blackout blinds and an in-room mindfulness content series called Rituals. —James Manso, WWD, 29 Oct. 2024

Installing a reverse osmosis filtration system can treat this issue and get rid of the fishy scent. —Timothy Dale, Better Homes & Gardens, 9 Oct. 2024

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

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