It can be used in various contexts, including:
* Vehicles: "Turn on the demister to clear the fog from the windshield."
* Mirrors: "The bathroom mirror has a demister function to prevent it from fogging up."
* Electronics: "The camera lens has a demisting coating to prevent moisture buildup."
* General usage: "The sun eventually demisted the air, revealing a clear view of the mountains."
Essentially, demisting refers to the act of making something clear or free of moisture by removing the mist or condensation that has formed.