Percolation (noun)

1. The process of filtering a liquid through a porous material, such as coffee through a coffee filter, in order to remove impurities or extract substances.
2. The passage of a fluid, such as water, through a porous medium, such as soil, rock, or a filter.

Origin:

Derived from the latin word 'percolare' meaning 'to strain through', percolation refers to the process of filtering a liquid through a porous material.

Examples:

1. The percolation of water through the soil is important for plant growth.
2. The percolation of coffee through a filter is a common method for making coffee.
3. The percolation of liquids through the earth's crust helps to distribute heat and minerals.
4. The percolation test measures the rate at which water moves through soil.
5. The percolation process was used to purify the contaminated water.