HyperDic: clouding_up

English > 1 sense of the expression *clouding up*:
NOUN	process	clouding up, clouding	the process whereby water particles become visible in the sky

English > *clouding up*: 1 sense > noun 1, process
Meaning	The process whereby water particles become visible in the sky.
Synonym	clouding
Broader	vaporization, vaporisation, vapor, vapour, evaporation	The process of becoming a vapor