- 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
- 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