The meaning of INFILTRATE is to enter or become established in gradually or unobtrusively usually for subversive purposes. How to use infiltrate in a sentence.

Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and phreatic or saturated zone. (Source: United States Geological Survey.) Infiltration is the process by …

INFILTRATION definition: 1. the process of secretly becoming part of a group in order to get information or to influence the…. Learn more.

INFILTRATION definition: the act or process of infiltrating. See examples of infiltration used in a sentence.

Definition of infiltration noun from the Oxford Advanced Learner's Dictionary. [uncountable, countable] the act of entering a place or an organization secretly, especially in order to get …

Dec 14, 2025 · infiltration (countable and uncountable, plural infiltrations) The 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 …

to filter into or through; permeate. to cause to pass in by filtering. Military to move into (an organization, country, territory, or the like) surreptitiously and gradually, esp. with hostile intent: …

INFILTRATION definition: the act or process of infiltrating | Meaning, pronunciation, translations and examples

infiltration, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

In science, infiltration generally refers to rainwater being absorbed by the ground, or groundwater entering sewers and causing overflows that harm the environment.