Noun infiltration has 2 senses
  1. infiltration - a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)
    --1 is a kind of
    penetration, incursion
    Derived forms: verb infiltrate2, verb infiltrate4
  2. 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"
    --2 is a kind of filtration
    Derived forms: verb infiltrate3, verb infiltrate1
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