sorption

n. process of taking up and holding by absorption or adsorption

Sorption refers to the action of either absorption or adsorption. As such it is the effect of gases or liquids being incorporated into a material of a different state and adhering to the surface of another molecule. Absorption is the incorporation of a substance in one state into another of a different state (e.g., liquids being absorbed by a solid or gases being absorbed by water). Adsorption is the physical adherence or bonding of ions and molecules onto the surface of another molecule.
See more at Wikipedia.org...

Noun
1. the process in which one substance takes up or holds another (by either absorption or adsorption)
(hypernym) natural process, natural action, action, activity
(hyponym) absorption, soaking up
(derivation) sorb, take up

n. sorption, absorbency

The action of soaking up or attracting substances; process used in many pollution control systems.