noun
1. the process whereby fluids pass through a filter or a filtering medium
• Derivationally related forms: ↑filter
• Hypernyms: ↑natural process, ↑natural action, ↑action, ↑activity
• Hyponyms: ↑percolation, ↑infiltration
2. the act of changing a fluid by passing it through a filter
• Derivationally related forms: ↑filter
• Hypernyms: ↑change
• Hyponyms: ↑percolation
Useful english dictionary. 2012.