Infiltration
/ɪnfɪlˈtɹeɪʃən/
"Infiltration" in a Sentence (2 examples)
calcareous infiltrations filling the cavities
No one should be under any illusions about the objective of the Communist Party leadership: it’s long-term, systematic infiltration of social organisations, media and government. By the time China’s infiltration of Australia is readily apparent, it will be too late.