Definition of persorption in US English:



  • 1Physical Chemistry. Sorption in which molecules of a gas enter pores in a solid that are only a little larger than themselves.

  • 2Physiology 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.


1930s; earliest use found in James William McBain (b. 1882). From per- + sorption, after adsorption, absorption.