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

On top of this, subterranean drip systems often clog with mineral deposits, sediment, and algae, which Nad warns may eventually require repairs or replacement of portions of the system, particularly in areas with hard water or poor filtration. — Kamron Sanders, The Spruce, 13 July 2026

That approach reuses existing infrastructure, including the tub, the drain and the space, while adding the cooling and filtration components that make consistent cold immersion possible. — Samantha Agate, Fort Worth Star-Telegram, 9 July 2026

My Luxury Home Spa advises that homeowners should also account for electricity use, water care, filtration, cleaning and whether the system sits indoors or outdoors. — Samantha Agate, Sacbee.com, 9 July 2026

That said, goldfish can grow surprisingly large and produce a considerable amount of waste, so proper filtration is essential. — Rachel Silva, Martha Stewart, 9 July 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