What does "adsorption" mean?

The adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface.

What is a synonym for "adsorption"?

Common synonyms include: absorbency, absorbent, absorption, adsorbent, assimilation, blotter.

noun

noun ·Rare ·Advanced level

Noun

1
The adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface. countable, uncountable
2
the accumulation of molecules of a gas to form a thin film on the surface of a solid wordnet

"What's the difference between absorption and adsorption?"

Borrowed from German Adsorption, from ad- + (Ab)sorption.