Infiltration
Infiltration , noun
[Compare French infiltration.]
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.
2.
The substance which has entered the pores or cavities of a body. — Addison
Calcareous infiltrations filling the cavities.
Collocations (2)
Infiltration gallery , a filter gallery.