Definitions

1. verb

to remove the mist from (a window or other glass surface)

“She used the cloth to demist the car windshield.”

2. verb

to clear the air or atmosphere, so that something can be seen

“The sun began to demist the valley after the fog had lifted.”

3. noun

a device that removes mist from a glass surface, typically used in vehicles

“The car’s demist function was not working properly.”