| filtration | | |
| n. (process) | 1. filtration | the process whereby fluids pass through a filter or a filtering medium. |
| ~ natural action, natural process, action, activity | a process existing in or produced by nature (rather than by the intent of human beings).; "the action of natural forces"; "volcanic activity" |
| ~ percolation, infiltration | the slow passage of a liquid through a filtering medium.; "the percolation of rainwater through the soil"; "the infiltration of seawater through the lava" |
| n. (act) | 2. filtration | the act of changing a fluid by passing it through a filter. |
| ~ change | the action of changing something.; "the change of government had no impact on the economy"; "his change on abortion cost him the election" |
| ~ percolation | the filtration of a liquid for extraction or purification. |
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