1) Accumulate on a surface 2) Accumulate on the surface 3) Accumulate, chemically 4) Act on like a carbon filter 5) Collect in condensed form 6) Collect on a surface 7) Condense on a surface 8) Create a film 9) Gather in a condensed layer 10) Gather on a surface 11) Sorb 12) Take up 13) To gather on a surface 
adsorbed; adsorbing. To collect molecules of a substance on a surface. 
to attract and stick to the surface
<chemistry> Refers to the process of one material attracting and holding molecules of another substance to the surface of its molecules. ... (06 May 1997) ... 
(ad-sorb´) to attract and retain other material on the surface; to conduct the process of adsorption.
To gather on a surface (opposed to absorb).
Type: Term Pronunciation: ad-sōrb′ Definitions: 1. To take up by adsorption.
To bind to a surface.
[v] - accumulate on the surface
To collect molecules of a substance on a surface. See also: Adsorbent, Adsorbtion Chromatography.
verb accumulate (liquids or gases) on the surface
to gather (a gas, liquid, or dissolved substance) on a surface in a condensed layer: Charcoal will adsorb gases.