Filtration (noun)

1. The process of passing a liquid or gas through a filter to remove impurities.
2. The process of separating particles or substances from a mixture using a filter or other similar device.
3. The state or condition of being filtered.

Origin:

From the latin word filtrum, meaning a strainer or filter, and the suffix -ation, indicating the process or action of something.

Examples:

1. The water filtration system was installed to purify the city's water supply.
2. The air filtration system was used to remove dust and pollen from the air.
3. The oil filtration process removed impurities and made the oil safe for consumption.
4. The filtration of the blood is done by the kidneys.
5. The process of filtration is used in many industrial processes.