Cold coating is a type of weather phenomenon that occurs when the air temperature drops below freezing and moisture in the air condenses into tiny ice crystals. The three crossword solutions for the term cold coating are HOAR, FROST, and RIME. HOAR is a white or grayish-white deposit of frozen dew or FROST, often seen on grass or trees in cold weather. FROST is a thin layer of ice formed when water vapor in the air is cooled to below freezing. RIME is a white deposit of frozen dew or FROST that forms on objects exposed to the air in cold weather.