infiltration

What it means

1. countableuncountableThe act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
   1. countableuncountablesoil sciencegeographyprocess by which water on the ground surface enters the soil.
2. countableuncountableThe substance which has entered the pores or cavities of a body.

   calcareous infiltrations filling the cavities

   1784, Richard Kirwan, Elements of Mineralogy

In a sentence

calcareous infiltrations filling the cavities

1784, Richard Kirwan, Elements of Mineralogy

Where it comes from

1. Medieval Latininfiltrātiōnem
2. Middle Englishinfiltracioun
3. Englishinfiltration

From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion.