You searched for: “adsorption
adsorption (s) (noun), adsorptions (pl)
The adhesion of a liquid or a gas on the outer layer of a solid material: The process of adsorption takes place when a fluid is conveyed as a very thin film only onto a surface of an object and can be distinguished from "absorption", a situation where one substance actually penetrates into the inner structure of the other.
This entry is located in the following units: ad- (page 9) -tion (page 2)