+An **adsorbate** is the substance, be it gas, liquid, or dissolved solid, that is accumulated on the surface of another material. It clings to an [Adsorbent](/wiki/adsorbent) in the process of [Adsorption](/wiki/adsorption), often forming a thin film.
+## See also
+- [Adsorption](/wiki/adsorption)
+- [Adsorbent](/wiki/adsorbent)
+- [Desorption](/wiki/desorption)
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