frost
/fɹɑst/noun
A thin layer of tiny ice crystals that forms on surfaces left out in cold air.
Example sentences
- “The car windows were covered in frost this morning.”
- “An early frost killed the tomato plants in our garden.”
Note the scale: frost is the white coating, a freeze is the cold event, and ice is the solid mass. Gardeners plan around 'the first frost' and 'the last frost'.