'Infiltration' definitions:

Definition of 'infiltration'

From: WordNet
noun
A process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)
noun
The slow passage of a liquid through a filtering medium; "the percolation of rainwater through the soil"; "the infiltration of seawater through the lava" [syn: percolation, infiltration]

Definition of 'Infiltration'

From: GCIDE
  • Infiltration \In`fil*tra"tion\, n. [Cf. F. infiltration.] [1913 Webster]
  • 1. The act or process of infiltrating, as of water into a porous substance, of a fluid into the cells of an organ or part of the body, or of persons into a hostile organization. [1913 Webster +PJC]
  • 2. The substance which has entered the pores or cavities of a body. --Addison. [1913 Webster]
  • Calcareous infiltrations filling the cavities. --Kirwan. [1913 Webster]
  • Fatty infiltration. (Med.) See under Fatty.
  • Infiltration gallery, a filter gallery. [1913 Webster]

Synonyms of 'infiltration'

From: Moby Thesaurus