Movement of water through the soil surface into the ground.
a process in which a military force moves as individuals (or small groups) through enemy positions without detection
a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)
the slow passage of a liquid through a filtering medium; "the percolation of rainwater through the soil"; "the infiltration of seawater through the lava"
the slow passage of a liquid through a filtering medium
