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Infiltration
01
a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)
02
the slow passage of a liquid through a filtering medium
03
the process by which water on the ground surface enters the soil, replenishing soil moisture and reducing runoff
infiltration
n
filtration
n
filtrate
v
Example
The soldiers were ordered to mine the perimeter of the base to prevent enemy infiltration.