Meaning of “permeate” - Learner’s Dictionary

permeate

verb [ T ] uk us /ˈpɜːmieɪt/ formal

to move gradually into every part of something:

The pungent smell of vinegar permeated the air.
Drug dealers have permeated every level of society.

(Definition of “permeate” from the Cambridge Learner’s Dictionary © Cambridge University Press)