To accumulate on the surface; of liquids or gases, in chemistry.
To attract and stick to the surface
Attract and hold to surface (minute particles of mixture or molecules of gas or liquid).

Množina: adsorbates

A material that has been or is capable of being adsorbed.
The material being removed by the adsorption process

Množina: adsorbents

A material having capacity or tendency to adsorb another substance; SYN. adsorbent material.
The material (activated carbon) that is responsible for removing the undesirable substance in the adsorption process.