"adsorbate" in the noun sense
1. adsorbate
a material that has been or is capable of being adsorbed
"adsorbate" in the adjective sense
1. adsorbable, adsorbate
capable of being adsorbed or accumulated on a surface of a solid
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License