permeate \PUR-mee-ayt\, transitive verb:
1. To spread or diffuse through.
2. To pass through the pores or openings of.
1. To spread through or penetrate something.
Passers-by could see into buildings through display windows, while the warm glow and sweet smells emanating from the shops and cafes permeated the partly enclosed pedestrian ways.
-- Larry R. Ford, The Spaces Between Buildings