Define desorption.

Desorption is a process in which a substance is released or removed from a surface or material on which it was previously adsorbed or absorbed. In desorption, molecules or atoms that were previously attached to the surface or trapped within the material are freed and released into the surrounding environment. This process is often employed in various fields such as chemistry, environmental science, and materials science, and it can be induced by changes in temperature, pressure, or chemical interactions.