Other forms: hazes
Haze is thin dust or moisture that blurs the air. Heat haze, a haze over the hills, lost in the haze.
It differs from mist and fog by being made of dry particles rather than water droplets, which is why haze is a summer word and fog a winter one. Heat haze is the shimmer over hot ground. Figuratively, a haze is a state of not thinking clearly: a haze of tiredness, the whole week is a haze. Note hazy, which describes both weather and memory.
1nounhazeThin dust or moisture that blurs the air.
“The hills disappeared into the haze by about eleven.”
2nounstateA state of not thinking clearly.
“The whole first week is a haze and he remembers none of it.”
haze is a blurring of the air.
The noun appeared in the seventeenth century, apparently back-formed from hazy, whose own origin is unknown. It is one of a small group of weather words that arrived in English with no traceable ancestry at all.
* The earliest instances are of the latter part of the 17th century.
Etymology from Wiktionary, CC BY-SA