permeation
🇺🇸
/ˌpɜːrmiˈeɪʃn/
🇬🇧
/ˌpɜːmiˈeɪʃn/
the process of a substance spreading through something
The cream's permeation through the skin helps deliver medicine effectively.
the spreading of something to affect all parts
The permeation of digital technology has changed how we live and work.