persorption
/pəˈzɔːpʃn/ /pəˈsɔːpʃn/noun
1 Physical Chemical Sorption in which molecules of a gas enter pores in a solid that are only a little larger than themselves.
2 Physiology and Medicine. The passage of a substance through the skin or a mucous membrane; specifically the passage of intact particulate material through the gastrointestinal mucosa.
Origin
1930s; earliest use found in James William McBain (b. 1882). From per- + sorption, after adsorption, absorption.